I have a 1990xp bandit chipper recently it has not been working correctly all of a sudden I will try and chip something I would lose rpms and it wouldn’t regain rpms I would have to push the button and try to regain rpms sometimes it would go up and sometimes and wouldn’t at all my rpms would be at 2400 and then drop down to 170o . I **** it off wait 10 minutes or so start it back up seems fine chipping the first piece and then it will do it again on the next I was told it was the ignition switch which I replaced but still doing it any ideas on what it would be? Also because I was told it was the ignition switch the Murphy computer had that code in it I’ve tried to clear it but how I was told to clear it didn’t work any ideas on that too maybe the code still being in the computer still causing the problem let me know what you think thanks