Hi, I have a 2008 YZF250 that runs well at idle and moderate RPM. The problem occurs at higher RPM; the bike will sputter and backfire slightly. The carb and jets have been cleaned thouroughly and now I'm being told it's the stator that's causing the issue. In my mind, a stator is nothing but wound wire that unless hit with a sledgehammer couldn't possibly break. Is there other components associated with the stator that could cause limited ignition at high RPM? Thanks.