Thanks for the advice guys.
I have been having problems with my 540 tourer lately. It just seems to have no speed. I have tried new motors, new batteries and it went quick for one heat then was back to being slow in the next one. The reason I asked about what ESC's you use is because it is the only thing I have not changed. I currently use a Novak GTS. Any help would be appreciated, I'm almost out of ideas