It takes more timing to burn a lean mixture.
True, I've taken that into consideration. Just kicking up the initial timing didn't work out.
I think I'll have to try playing with the distributor weights and centerplate to get a bit more max timing. I'm just a bit hesitant about adding too much because I can't hear the detonation if it occurs due to my hearing for one, and the lack of guts in the "mufflers". I don't want to find out the hard way that I added too much.
Rick