I've run a sensored 1900Kv Trackstar on an unsensored 150Amp HW with no issues at all. From what I was told on a thread here, the motor defaults back to a base 0 degree timing without sensor input. Either this truck is massively geared wrong or maybe the motor endbell timing has been changed. Granted I don't know Tekin, but I can't imagine their any different than most others on timing and sensorless operation.

I'm really curious to see what this ends up being.