[RdBrd83]

No prob, glad you got it figured out.
In reference to your question about everything going in the USER_OEM, I really can't answer with 100% certainty. I had never tried adding anything to the kitchen before, and figured that out by trial and error. I'm assuming yes though.
Your 3 examples:
1) You can't put just any cab into the kitchen. It has to be converted for OEM. I have no idea what's involved in this, but check out the Custom OEM link in rstoyguy's signature.
2) Yes
3) You might be able to add things to the PPCKitchen_OEM.rar. I don't know why it wouldn't work, but I've never tried it.