Been enjoying the new slide on the P200, helped a lot with light throttle high RPM spark knock. So I thought I'd try to go back from BE4 mixer to BE5 (no holes to small holes on high RPM side), since it seemed I might have richened it up almost too much. Started feeling lean spots here and there, so I swapped back. Mixer has been chosen, BE4 is much better, staying with it.
Next up is pulling the cylinder to get the top milled for the rest of my squish, and I'm now thinking about either the Kehper or Kytronic, as I'm running 18 degrees and could have some mid RPM advance back.