No problem there, I was a little scared. We already purchased one of the MA batteries, under the assumption that it would fit. I have also seen those battery trays, but I'm going to try something a little different first. Those are expensive, and I don't have the money to spend on that right now.
Ditto on that motor, it is a MONSTER. He is running the Castle Creations MM in there, and is super fast.
Thanks for all of our help