I have a 2004 CR250R that I race hare scrambles in Virginia. This bike really runs well with the stock carb., starts good on the line (dead engine start) and stays relatively consistant with the jetting. I would, however, like it to run more like a KTM 300, pulling clean down low. I really don't need 'top end overrev' or crazy power, just a good, clean, 4T-like pull starting at idle. As good as my bike runs, would it really benefit from a PWK conversion, or did I happen to get a bike with the proper squish, etc. already and it's as good as it's gonna get? I think a lot of feedback regarding the PWK comes from riders who either ride primarily MX or they call desert riding 'singletrack'. My bike seems to run fine but if it could run better in slow, technical terrain I'd be happy. I see people reply that their bike 'starts first kick' with the Keihin. Well, my bike starts first kick with the Mikuni. I see people reply that 'their jetting changed every time they rode'. Well, my bike was lean when I first took possession and I corrected it and have yet to change anything. I guess I need to hear from someone whose CR ran fine before the conversion but even better after. I relate it to not knowing just how poor your vision has become until you had it corrected. Thanks for the input. Sorry to sound redundant.