Yeah I feather the clutch at around 3-4k rpm so it won't stall on me. I just hate doing that because it seems like I'm going to wear the crap out of the clutch. On my track bike, you just need to let go the clutch and the bike will move on it's own, without reving it up. I took the bike out for a quick 100m ride, it seems to be fine just need to keep the rev high. The throttle seems to be better when the bike is hot, as in like 10 minutes of freeway ride of about 80-90mph. I guess it's just the nature of carburetor bikes.