Alright! I finally tried a bigger main jet.
Here's some tuning notes:
-As usual, idle mixture any leaner than 13:1 causes occasional misfires. I set mine ~13
-Idles smoothest between 530 to 560 rpm
-Going from 53 to 56 main jet made put my mid throttle (5-10"hg) mixture ~15:1 (it was 17:1) and made a noticeable difference in drivability:
-Driveline jolting is reduced by smoother transitions between mid-throttle, idle, or power piston
-The mixture can still lean a bit if the clutch isn't finessed, however it stays in a more reasonable range, go going no leaner than ~15.5.
-Power piston kicks on ~5" hg.
-Mixture between 2-5"hg is ~11.5 and 12.5 at WOT
The only thing still annoying me is the 11.5:1 mixture just below WOT.
I could probably live with it... but I'm thinking about trimming another coil from the power piston spring so that it only activates right at WOT (maybe 0-3" hg)
Alternatively, I could solder the power piston restriction and then re-drill it a bit smaller. Presumably shifting my PP mixture from 11.5-12.5 where it is now up to 12.5-13.5.
Thanks for the help guys.
