Ok guys, kinda new around here. I recently got a GT2 and have had it about a month and love it. Today, I have a major problem though. The truck was running well but now when I give it throttle it just sits there or creeps ahead very slowly and I can hear something grinding very badly. If I lift the rear end off the ground and give it throttle it spins the wheels like normal. Do any of you guys know what that could be and how I could fix it? I checked my slipper clutch and it seems to be fine, the clutch bell and spur gear spin well when I give it throttle. I need help, was gonna race on in a couple of days and would like to get this figured out.