Can't get it to idle right!

Thanks for all the replies.

When I set the total timing I just rev til the timing stops advancing, then set it to 30, at idle (900) it,s 12 with dis. Vac connected. The fluxuation, goes from 15k to stall 500, just sitting at idle. No pvc , just a hose to the air cleaner. I should have thought to check the vacuum, I'll do that tommorrow.