OP was way down on the list so I started a new thread for your issues!
Well, the vacuum could have been contributing to your problem. This thread has been going on for so long now I forget what you've done thus far.
- Complete tune up. Plugs, wires, cap and rotor?
- Had the ICM checked yet?
- Scanned for codes lately?
- Replaced 02 if older than 5 years or 75k miles?
- Recheck timing, should be 0* or TDC. Bump it up to 4* BTDC and see if it helps.
Doc
P.S. This thread is way down on the list. I'd start a new thread when you reply to this message. Ahhhh hell, I'll do it for ya!