Although my OX is complete I'm still in a quandary about the power supply. The two that I have are just not cutting it.12v @ 30A and a 24v @ 6.25A. I would have though the amount of amperes was the contributing factor here, but I may be wrong. I'm wondering what other OX owners are using. The power supplies do turn the Nema 17 OK, but the 23s are just turning really slowly. Can someone put me right here please. Thanks.