I'm the original owner of a 2006 XR650L. I had some headwork done because I had a valve seat loosen up on me and when I put the motor back together I installed a HotCam. Ever since my bike starts and idles great. As long as I don't open the throttle past 1/4 it purrs. Once I open the throttle past 1/4 I start to get a sporadic sputter. I originally thought I may be running lean so I up the jet sizes (both main and pilot jets) and that didn't help. I then thought maybe it's an electrical issue so I swapped both the CDI and coil from my friends 650L, that wasn't it either. I have pulled the smog equipment, done all of "Dave's Mod's" to the carb and added a WB E2 exhaust. I have read posts on this site and others from people who have installed a HotCam with similar mods who had great success. My next guess would be the stock CV carb not being sufficient but replacing it with a Flat Slide carb is a little costly right now. Does anyone have any ideas as to what my issue may be from?