diff --git a/src/main/java/gamecubeloader/rel/RELHeader.java b/src/main/java/gamecubeloader/rel/RELHeader.java
index 4b0ef01..e0f1dfd 100644
--- a/src/main/java/gamecubeloader/rel/RELHeader.java
+++ b/src/main/java/gamecubeloader/rel/RELHeader.java
@@ -148,7 +148,7 @@ public boolean IsValid(BinaryReader reader) {
 	}
 	
 	public int Size() {
-		switch ((int) this.moduleId) {
+		switch ((int) this.moduleVersion) {
 		case 0:
 		case 1:
 			return 0x40;
@@ -161,4 +161,8 @@ public int Size() {
 			return 0x4C; 
 		}
 	}
+
+	public int FullSize() {
+		return this.size() + (int) this.sectionCount * 8;
+	}
 }
diff --git a/src/main/java/gamecubeloader/rel/RELProgramBuilder.java b/src/main/java/gamecubeloader/rel/RELProgramBuilder.java
index f257553..d949d70 100644
--- a/src/main/java/gamecubeloader/rel/RELProgramBuilder.java
+++ b/src/main/java/gamecubeloader/rel/RELProgramBuilder.java
@@ -244,16 +244,17 @@ else if (fileName.endsWith(".rel") || fileName.endsWith(".szs") || fileName.ends
 						var isText = (section.address & RELProgramBuilder.EXECUTABLE_SECTION) != 0;
 						var blockName = String.format("%s_%s%d", relInfo.name, isText ? ".text" : ".data", isText ? textCount : dataCount);
 						
-						MemoryBlockUtils.createInitializedBlock(this.program, false, blockName, this.addressSpace.getAddress(currentOutputAddress),
-								relInfo.reader.getByteProvider().getInputStream(section.address & ~1), section.size, "", null, true, true, isText, null, this.monitor);
+						// Update the address of the section with its virtual memory address.
+						var offs = section.address & ~1;
+						section.address = relBaseAddress + offs;
+
+						MemoryBlockUtils.createInitializedBlock(this.program, false, blockName, this.addressSpace.getAddress(section.address),
+								relInfo.reader.getByteProvider().getInputStream(offs), section.size, "", null, true, true, isText, null, this.monitor);
 						
 						if (isText) textCount++;
 						else dataCount++;
 						
-						// Update the address of the section with it's virtual memory address.
-						section.address = currentOutputAddress;
-						
-						currentOutputAddress += section.size;
+						currentOutputAddress = section.address + section.size;
 						
 						// Ensure output address is aligned to 4 bytes
 						if ((currentOutputAddress & 3) != 0) {
@@ -268,7 +269,30 @@ else if (relInfo.header.bssSectionId == 0) {
 			
 			// Add bss section.
 			if (relInfo.header.bssSize != 0 && relInfo.header.bssSectionId != 0) {
-				if (relInfo.header.moduleVersion < 2 || relInfo.header.bssSectionAlignment == 0) {
+				if (this.specifyModuleMemAddrs) {
+					// TODO: Check against addresses already containing memory sections.
+					var setValidAddress = false;
+					while (!setValidAddress) {
+						var selectedAddress = OptionDialog.showInputSingleLineDialog(null, "Specify BSS Address", "Specify the BSS memory address for Module " +
+								relInfo.name, Long.toHexString(currentOutputAddress));
+							
+						if (selectedAddress == null) {
+							break;
+						}
+
+						try {
+							var specifiedAddr = Long.parseUnsignedLong(selectedAddress, 16) & 0xFFFFFFFF;
+							if (specifiedAddr >= 0x80000000L && (specifiedAddr + relInfo.header.Size()) < 0x81800000L) {
+								currentOutputAddress = specifiedAddr;
+								setValidAddress = true;
+							}
+						}
+						catch (NumberFormatException e) {
+							continue;
+						}
+					}
+				}
+				else if (relInfo.header.moduleVersion < 2 || relInfo.header.bssSectionAlignment == 0) {
 					currentOutputAddress = align(currentOutputAddress, 0x20);
 				}
 				else {
@@ -311,7 +335,7 @@ else if (relInfo.header.bssSectionId == 0) {
 					name = name.substring(0, name.lastIndexOf("."));
 				}
 				
-				mapLoadedResult = SymbolLoader.TryLoadAssociatedMapFile(name, directory, this.program, this.monitor, relBaseAddress, (int)relInfo.header.sectionAlignment,
+				mapLoadedResult = SymbolLoader.TryLoadAssociatedMapFile(name, directory, this.program, this.monitor, relBaseAddress + relInfo.header.FullSize(), (int)relInfo.header.sectionAlignment,
 						relInfo.header.bssSectionId != 0 ? relInfo.header.sections[relInfo.header.bssSectionId].address : 0);
 				
 				if (mapLoadedResult.loaded != false) {
@@ -330,7 +354,7 @@ else if (relInfo.header.bssSectionId == 0) {
 					
 					if (selectedFile != null) {
 						var reader = new FileReader(selectedFile);
-						var loader = new SymbolLoader(this.program, monitor, reader, relBaseAddress, 0,
+						var loader = new SymbolLoader(this.program, monitor, reader, relBaseAddress + relInfo.header.FullSize(), 0,
 								relInfo.header.bssSectionId != 0 ? relInfo.header.sections[relInfo.header.bssSectionId].address : 0,
 								this.binaryName, true);
 						this.symbolInfoList.add(loader.ApplySymbols());