[miketre]

hmmmm... had tried running it in stock condition (removed additional FETs) but it was still the same.
I had redone the setup process according to the intructions in the manual and I'm using an M8 controller.
had tried reducing the EPA to 80% but that didn't help.
I also tried redoing the ESC setup with the controller's EPA at 80% but it's still the same.

I'm putting it down to incompatibility of some sort, but don't know which one to replace first (Rx or ESC). I'm keen to try out the X-speed though..... On my 4wd speed checker, it;s about 63% faster than the stock motor, and just a tad faster than my fastest mini-Z (4 cells)

*edit*
Oops! forgot that I am using 6 cells.... the capacitor is only rated at 6.3V. (had originally gotten it for my Mini-Z)