Now that you mention it, I am having a problem with the distributor setting in right. Every distributor I've ever dealt with just sat right down on the intake but this one, at least before you bolt it down, wants to sit just a hair high. I assume shimming is advisable? Also, I'm having REAL trouble getting the distributor holder to actually hold the distributor and keeping it from turning. Does anyone know of a good distributor holder. Seems like a crappy design: the holder just sits cock-eye across the distributor base. Yes, I don't have a lot of experience with the fine points of tuning a motor. I can build one, but this is the first one that I've ever tried to get all the kinks worked out on. All my previous were just stock and went right together.