not to start a debate Steve, cause I rarely need choke since the jet kit kit was installed 3 yrs ago. But on a stock jetting setup (no shims even) with an SO, the lean condition causes such cold bloodedness. 1500 rpms or near idle at warm up would stall everytime. 2500 min to prevent stalling on mine in that situation, there's no way I could get 4k out of it after the SO was installed any way, but 2500-3k as a normal warmup on that setup.
Since the jetkit was installed, I can start on warm days with no choke, modulate the throttle a little to get the gas flowing and idle is fine, then I'm down the road in no time anyway anyway.
And just to clarify, letting your engine idle for long periods ain't exactly the greatest idea either on the old gixxer power plant, unless you enjoy fouled plugs.
to each his own I guess, but I agree 4k is too high. On a totally stock bike,I remember starting it when it was new on full choke and the rpms would jump too fast and I'd see 4k and have to back it down to around 2500. But near idle would never work for my bike before the jet kit in either instance. Just my opinion, but the bandit motor is tougher than you give it credit for, and near idle for warmup (1500rpm) on a lean condition bike is an invitation for stalls.