diff --git a/Ghidra/Features/Base/src/main/java/ghidra/app/cmd/data/CreateDataBackgroundCmd.java b/Ghidra/Features/Base/src/main/java/ghidra/app/cmd/data/CreateDataBackgroundCmd.java
index bb550afa54..3fc774b768 100644
--- a/Ghidra/Features/Base/src/main/java/ghidra/app/cmd/data/CreateDataBackgroundCmd.java
+++ b/Ghidra/Features/Base/src/main/java/ghidra/app/cmd/data/CreateDataBackgroundCmd.java
@@ -126,38 +126,15 @@ public class CreateDataBackgroundCmd extends BackgroundCommand {
 		return true;
 	}
 
-	private static Address alignAddress(Address addr, int alignment) {
-		if (addr == null) {
-			return null;
-		}
-		long mod = addr.getOffset() % alignment;
-		if (mod == 0) {
-			return addr;
-		}
-		try {
-			return addr.addNoWrap(alignment - mod);
-		}
-		catch (AddressOverflowException e) {
-			// ignore
-		}
-		return null;
-	}
-
 	private void createData(Address start, Address end, DataType dataType, Program p,
 			TaskMonitor monitor) throws CodeUnitInsertionException {
 
-		int alignment = 1;
-		if (newDataType.getLength() != newDataType.getAlignedLength()) {
-			// datatypes whose length does not match their aligned-length must
-			// be properly aligned to account for padding (e.g., x86-32 80-bit floats)
-			alignment = newDataType.getAlignment();
-		}
+		Address nextAddr = start;
+		Listing listing = p.getListing();
+		listing.clearCodeUnits(start, end, false);
 
 		int initialProgress = bytesApplied;
 
-		Listing listing = p.getListing();
-		listing.clearCodeUnits(start, end, false);
-		Address nextAddr = alignAddress(start, alignment);
 		int length = (int) end.subtract(nextAddr) + 1;
 		while (nextAddr != null && nextAddr.compareTo(end) <= 0) {
 			if (monitor.isCancelled()) {
@@ -165,19 +142,22 @@ public class CreateDataBackgroundCmd extends BackgroundCommand {
 			}
 
 			Data d = listing.createData(nextAddr, dataType, length);
-			Address maxDataAddr = d.getMaxAddress();
-			bytesApplied = initialProgress + (int) maxDataAddr.subtract(start) + 1;
-			nextAddr = alignAddress(maxDataAddr.next(), alignment);
-			if (nextAddr != null) {
-				length = (int) end.subtract(nextAddr) + 1;
+			int dataLength = d.getLength();
+			bytesApplied = initialProgress + dataLength;
+
+			try {
+				nextAddr = nextAddr.addNoWrap(dataLength);
+				length -= dataLength;
+			}
+			catch (AddressOverflowException e) {
+				return;
 			}
 
 			monitor.setProgress(bytesApplied);
 			if (++numDataCreated % 10000 == 0) {
 				monitor.setMessage("Created " + numDataCreated);
 
-				// Allow the Swing thread a chance to paint components that may require
-				// a DB lock.
+				// Allow the Swing thread a chance to paint components that may require lock
 				Swing.allowSwingToProcessEvents();
 			}
 		}
diff --git a/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/CompositeEditorModel.java b/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/CompositeEditorModel.java
index 7f4ac424c5..f98e0adb69 100644
--- a/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/CompositeEditorModel.java
+++ b/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/CompositeEditorModel.java
@@ -212,7 +212,7 @@ public abstract class CompositeEditorModel extends CompositeViewerModel implemen
 		}
 
 		DataType resultDt = DataUtilities.reconcileAppliedDataType(currentDt, dt, true);
-		int resultLen = resultDt.getAlignedLength();
+		int resultLen = resultDt.getLength();
 
 		if (resultDt instanceof Dynamic) {
 			resultLen = DataTypeHelper.requestDtSize(getProvider(), resultDt.getDisplayName(),
@@ -222,7 +222,9 @@ public abstract class CompositeEditorModel extends CompositeViewerModel implemen
 			throw new InvalidDataTypeException("Data types of size 0 are not allowed.");
 		}
 
-		return DataTypeInstance.getDataTypeInstance(resultDt, resultLen, true);
+		// TODO: Need to handle proper placement for big-endian within a larger component (i.e., right-justified)
+		return DataTypeInstance.getDataTypeInstance(resultDt, resultLen,
+			viewComposite.isPackingEnabled());
 	}
 
 	/**
diff --git a/Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/DataTypeInstance.java b/Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/DataTypeInstance.java
index 560848301d..c75dca418b 100644
--- a/Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/DataTypeInstance.java
+++ b/Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/DataTypeInstance.java
@@ -77,6 +77,11 @@ public class DataTypeInstance {
 	/**
 	 * Generate a data-type instance
 	 * Factory and Dynamic data-types are NOT handled.
+	 * <br>
+	 * This container does not dictate the placement of a fixed-length type within this
+	 * container.  It is suggested that big-endian use should evaulate the datatype
+	 * at the far end of the container.
+	 * 
 	 * @param dataType data type
 	 * @param buf memory buffer
 	 * @param useAlignedLength if true a fixed-length primitive data type will use its 
@@ -95,6 +100,11 @@ public class DataTypeInstance {
 	/**
 	 * Attempt to create a fixed-length data-type instance.
 	 * Factory and non-sizable Dynamic data-types are NOT handled.
+	 * <br>
+	 * This container does not dictate the placement of a fixed-length type within this
+	 * container.  It is suggested that big-endian use should evaulate the datatype
+	 * at the far end of the container.
+	 * 
 	 * @param dataType data type
 	 * @param length length for sizable Dynamic data-types, otherwise ignored
 	 * @param useAlignedLength if true a fixed-length primitive data type will use its 
@@ -128,6 +138,7 @@ public class DataTypeInstance {
 			}
 		}
 		else if (useAlignedLength) {
+			// TODO: big-endian should place type at end of this container
 			length = dataType.getAlignedLength();
 		}
 		else {
@@ -145,10 +156,11 @@ public class DataTypeInstance {
 	 * Attempt to create a data-type instance associated with a specific memory location.
 	 * Factory and Dynamic data-types are handled.
 	 * <br>
-	 * NOTE: fixed-length primitive datatypes assume {@link DataType#getLength() raw datatype length}
-	 * intended for {@link Data} use.
+	 * This container does not dictate the placement of a fixed-length type within this
+	 * container.  It is suggested that big-endian use should evaulate the datatype
+	 * at the far end of the container.
 	 * 
-	 * @param dataType
+	 * @param dataType the data type
 	 * @param buf memory location
 	 * @param length length for sizable Dynamic data-types, otherwise ignored
 	 * @param useAlignedLength if true a fixed-length primitive data type will use its