Rode my outty the other day and everything run fine and was working properly but when I cut it off and then shortly after tried to crank it up, all it would do is barely turn over but not enough to crank it. Hooked jumper cables to it and it started right up. The motor has been rebuilt with new crank and rods and other things so thats not the problem. What could it be? Stator? Voltage Regulator? I have 2 batteries on it and they are only a couple months old.