ORIGINAL: w8ye
The timing may be advanced 1 tooth?
I have three Saito 56's and they turn a APC 12/6 at 10,000 on 15% fuel
WOW!!! How insightful that can only come from experience, upon disassembly it looks like you are correct. It looked to be off by 1 tooth. I didn’t bother to figure out which direction. I have carefully reassembled and will try later today, I need to make a couple of valve cover gaskets first. I think in the end I will owe you a bunch of thanks, I will report back after a run. Thanks