Hey guys, it's been a while but I have a timing question. I have an 81H with HHB PMA, Pamco with E Adv. new pistons, rings, head, timing chain and guides and ss valves and oil seals. The new top end was due to an exhaust valve that broke and dropped into the piston chamber. Not the issue. This is my second Pamco. The first one was faulty. I had to cut the mounting bracket in order to get it to advance correctly and then due to all the futzing about, the solder on the board failed and that was that. I bought a new one and it fit and timed pretty much right up. I used a timing light to set the timing. It idles perfectly. My issue is that around 3200 rpm I get a little hesitation and then it smoothens out at 3500. My question is. To get that advance exactly right, would I move the plate toward advance or retard a bit. I hate to screw it up but I would like some opinions. I know some will ask about TDC and I am confident that I have the timing mark extremely close, but with the PMA and no woodruf key, there may have been some slippage where I made my mark. Anyway, what can I do to rid myself of that pesky 3200 rpm vibration? Or is it just what happens in that range? Thanks for the input. Here's what it looks like now.