I put a 2HP, 3450 rpm, single phase, type "B", 18/9 amp motor onto my cement mixer and it spins at too high a speed and just pins the mix to the inside of the mixer. I feel like if I slow it down it would be fine. Is there a simple way to do this? One note, I do have a 1HP 3450 single phase 16/8 amp. motor, but I don't know if this would change much. I'm no electrician and would appreciate very much any help!! Thanks!