Thanks Rob, the one time I went 1 step up rich it was "better" but still had SOME surging/stumble.
So my next "changes" were
1- Set valve lash a little looser .018 int and .022 ex(comp says .022 for both)
2- reduce timing to 12* from 16*(mentioned on here)
3- increased idle(rpm dropped with timing) approx 1/4 turn.
4- opened IMS up another 1/2 turn to chk for changes.
This was my drive last night, nfg lol.
Honestly the ims screws make no difference until approx 1 1/2- 1 1/4 turns out....from 1 1/2- 2 turns there is next to no difference.