I appreciate video I am experiencing the same problem to my cm 870 ISX. Had an out of frame rebuild last year July 2023 and it’s been hell all the way up to today. I need to get a proper diagnostics done. The people I have been using are at this point guessing what is going on , and don’t wont to go back inside the engine to do the timing as I am being told. This should be my next move. Thank you my brother. Yard man style!
