Hey guys I have an older E-Maxx with the stock titan motors and I made 4500mah 6 cell tenergy batteries. I was using the original esc until it got wet and overheated the batteries. I then installed a new EVX-2 esc using a new set of the same batteries but now the truck seems much slower. I know the EVX-2 is designed for the newer e-maxx and the E-Revo with higher voltage. Could this esc not be compatible with my truck??