First, Thank you to anyone who replies...I am not a mechanic so please keep it simple..I have learned a lot about the bike but not anything super technical. 1) The bike drive sprocket is locked up, it wont move, not backward, not forward. I saw a youtube video saying that I should remove the drive sprocket and file it to fix the problem? 2) I removed the right side clutch plate to manually move the sprocket and it wont budge. 3) I've had the motor eat a chain before and bend it to shreds, so I'm wondering if the drive sprocket itself is bad?