Hello, I jus recently got an sc10 4wd that came with a castle mmp esc n castle 5700kv motor. After some research and a 5min testing I found that that motor was not right for the truck at all n had major heat problems. So I bought a tekin sc4x 5.5 turn 550 motor n threw that in. I cant get it to even come close to running like I believe it should be, I changed the spur to a 58t from a 62t and put a 15t pinion in it and it jus seams like something it terribly holding it back, I got a castle link for the esc n tuned it n still no power, no idea whats going on. This is my first belt drive truck n I still got alot to learn about it for sure. Any help would be greatly appreciated, I got my slash 4wd jus ripping the oval up n I was sure that this truck n setup would demolish my slash n its not even coming close!! Thanks in advance for your time!!