I have an '07 Summit X and when playing in the deep pow and I carve hard on the left side the sled will drop down to almost 6000 rpm and it sounds like the track rubs against the tunnel. It only lasts for a second and then is jumps right back up but won't stay steady and the rpms jump around a few hundred rpm. I'm thinking maybe clutches as I can't see anywhere the track is rubbing. Any ideas?