I was at a local race over the weekend and was having some issues with my bike. When I was coming out of corners the bike was bogging regardless of what gear I was in. On several occassions I stalled the bike coming into corners also. When I would get on the gas hard out of a corner the bike almost shut off. One of the mechanics at the race told me it was probably my accelerator pump in the carb and that they come from the factory with this problem. He had me start the bike and hit the gas hard when at idle. The bike almost shut off each time. I tried riding with the idle up and keeping the throttle slightly turned but it didn't help and I couldn't ride normally. The bike ran fine last week and I haven't done anything other than an oil and air filter change. I've only had this bike for 2 months. The mechanic said he charges $100 to re-wire the accelerator pump. If this were the problem, wouldn't this have been the issue since day one? Any advice?