Hey just blew my pro 800 up, the chassis has 2700 miles on it and I put the fix it kit on at 800 it was mnttk kit, mostly mountain miles on it but I'm a average size guy and don't load it too hard, think I broke a skirt but haven't pulled it apart yet but thought I should get a few more miles on it, any suggestions as to why it blew?motor was running when I shut it off but then the Motor would not turn but it is loose rotates about a turn, changes a bit each time how far it will rotate, thanks