while replacing the TPS and adjusting it i noticed that the idle screw on the top of the tb was loose and would rattle it s way down out of position. it seems whatever that black sealant was has deterioroated. what can i use to act as a sealent?

 

Tried grease?
I wouldn't want to put anything in there that's going to stick to much...

 

UPDATE- I used TEFLON TAPE, fixed it right up.