While playing around with PartCatalog and some custom ModuleManager configs for adding KASModuleGrab to more parts, I noticed the following behaviors (I did most of my testing using RCSBlock, but seems to apply to all stock parts):

• Right-clicking on the part entry in the VAB does not show KASModuleGrab on the list of modules, even though it does appear for KAS parts. Makes it kind of hard to tell which parts are and aren't grabbable.
• KASModuleGrab on stock parts cannot be detected by the containsModule() script function from PartCatalog

I'm only assuming, of course, that these two issues are related, but it seems likely.

• Logfiles
• Still happens without PartCatalog?
• What exactly did you change?

This was before KAS supported ModuleManager natively. I think this issue can be safely closed.