BTW you can tell if the rack bolt is bad or not by trying to compress it between your fingers.

If you can easily push it down, its bad.

If it starts to feel like its poking pretty hard into you and really pushes back...then its most likely fine.

BTW I used to have a REALLY bad hot idle...to the point that it would somtimes stall.

I ended up adjusting my IP delivery valves (not something a DIYer can do...best if a injection pump shop does it) and it smoothed out.

THe rough idle is sorta back...but thats cuase I never finished the adjustment. I was worried I was making it worse but actaully ended up getting much better!!!

Timing can do some...but that is easy to check.