Took my 2005 Gp800R out over the long weekend and it ran great until Sunday. It started to run rough (like only on one cylinder) when the throttle was transitioned from idle to full then it would all of a sudden go full throttle and would stay that way until i slowed back down then when i went full throttle again same thing any suggestions? i did have to put the fuel on reserve prior to this starting but only for a few min to get back to the dock.