I finally solved the problem with the Cirtix 17.5 club combo. When I got it there was a problem and the motor would only stutter and not go. Found out the sensor wire was broken off in a few places where it goes into the connector. Replaced that, still stutters a little on startup and has a significantly lower top end than other guys running the same combo and it would also get very hot running the same rollout as everyone else. When I contacted Speed Passion they said they couldn't do anything if the motor smelt any bit burnt (not my fault). So I ordered a used novak 17.5 motor on here, put that in today and it runs perfectly. Thankfully the problem was the motor and not the esc.