> Bone stock with dual vac distrib??

I'm not sure what you mean by dual vac.

>From what I've been reading it does sound like timing. Would that go
overnight? Another thing I'm considering is it may be lower octane
gas. I may just get my Muir book out and do a Valve/timing/ tune up.
I think I'll try some premium gas first and see what happens. Easiest
and cheapest step first.

Thanks,
John