I have a 2011 commander 800R XT. I have been blowing belts way to often. It also jerks on starting and when slowing with engine breaking. I have been using BRP and GForce belts. With standard tires and with large tires. Most often at high speeds and while powering through soft terrane. Please help. I ordered a new Red drive clutch spring for starters. Clutches are clean. Factory drive clutch spring is black with a yellow side.