GOOD NEWS. . . . The PICTURE UPLOAD FUNCTION IS WORKING !!! The tech folks at the parent company have been able to remedy the issue. You can upload pictures once again. Thank you for your patience.
The overrev limiter in my BF50A causes the motor to "miss" lightly. The best way to describe it is that it runs rough. Backing the throttle down to maximum RPM causes the engine to run smooth again.
I don't know where it is located. I would guess that it is a setting in the electronics.