To my surprise, after my first trip to the high desert with a 160 main and an 8 disc supertrapp setup, the bike felt a little weak and the plug reveals a lean condition after some (a lot of) high speed full throttle operation. It ran so good at sea level on the street that I thought the approx 3000 ft altitude would have me slightly rich with a 160. Apparenly not. Can anyone confirm operation with a 165 (or larger) main on a (96) 600R? Been through this before with 600's in the past but it was a while back and I can't remember what my set up was.