I have a V2 A&D 120 and auto trickler and having some issues. I’ve had it just over a year I would guess. The trickler will be running and just randomly ramp up very fast and make a noise I assume due to the high speed then slow back down but only after it’s made a mess throwing powder all over scale and overthrown the charge. The slider on the back doesn’t seem to matter where it’s set and I have unplugged power and tried to restart. Anyone have ideas?