Benji explained to me tuning would be hard without a proper high-flow filter (can't just rubber-band on some foam I guess). After that I upjetted crrrazy, from 76 to 90 which is fine. Sucking more air + upjetting = more power, no?
I've got the main jet tuned rich so it four strokes because my only remaining question is about needle tuning...
The W7 needle is too rich at the richest setting, but too lean at the next one... such that 1/2 to 5/8 throttle BLASTS and pulling my choke does NOT make it 4-stroke in the slightest. I don't rely on plug chops for something so specific, and I wouldn't want to run 1/2 mile if it's too lean, I'll seize my polini.
Soooo. Is there anything else I can adjust to richen-up my 1/2 to 5/8 throttle a bit or do I need a different need needle or something?