Do you hear the motor ‘grinding’ when applying throttle?
I replaced the standard esc on mine (after I managed to get it to burn out) with one that has a super-soft startup mode. It won’t spool up when not applying power fast enough. Haven’t had that problem with the original one though …

Nice to see/hear other ppl flying and maintaining a MT.
If you’re interested in sharing some ideas, drop me an email.