I have a 6.5R with GTB SC. Took a really hard hit the other day, now my motor is cogging really bad. Most of the time I have to give it a push to get it going...and I notice its top speed is about 70% of before the hit. I open the motor, nothing is bend or breaken. I tried another GTB SC and its the same thing...so I know it something within the motor...senors?
Is there anything else I could check or do? Thx