OK, so after doing some digging I've discovered that the LDR module is only specific to the consolidated ROM version. Going to a different model or even a different capacity drive makes no difference. If the ROM version is the same, module 11 is always the same.
I think I'm going to start consolidating WD families into collections of LDR's by ROM version. Might make this whole process a lot faster, and then as new ones pop up we can just post in the appropriate family.