Ok, So I thought I get into R/C Trucks and Cars again.I got all my stuff back out and batteries ready again to get them up to performance. I have a Evader ST with a Sprint ESC and DX2 2.4ghs Transmitter and rec. If I give it full reverse and then smash the forward throttle real quick it doesn't go anywhere, but when one of the two 3300NiMh 7.2V Venom batteries i use in it seems to not have this problem, and if I just smash the forward throttle it with not using the one battery Ijust talked about it doesn't go anywhere, I have 4 batteries and it seems that the three might be the problem, and the one I've been using seems to work it fine. Just wanted to see if that could fully be it. If I left something out just say and I will say what else it's doing or whatever

Batteries- Two 3300mah NiMh 7.2v Venom with Traxxas plugs
and Two epic 3000mah NiMh 7.2v with standard plugs