Hi there, I recently put a new piston (15T Steel SHS) and a new piston head (Maxx CNC Aluminum double o-ring), along with a Perun V2 Hydrid drop in mosfet.
The tech who worked on the rifle did the shimming, and said he was forced to shim it a little bit high for one reason or another, but I got it back and did some testing. It's making a very high pitched whine when firing, and in auto it's very high pitched. (Can attach video if necessary.)
When firing in auto, occasionally it will just stop and have a flashing red light coming from the mosfet, which is a "blocked motor" according to the mosfet's programming aide.
Could this be that the motor is old and dying? Could the high shimming have caused it? Please help, as I don't want to spend money on a new HT Motor for no reason.
Thanks in advance!
NOTE: To my knowledge, the only modifications that have been done are the ones listed above, and a 6.01 tight bore. The rest is all stock.