Wow, I'm impressed. Thanks every one of you for taking the time to answer.. I tried the 16 acc. but same thing. I ran a small g code program and it worked until it made a different direction then the stall thing and then up to speed again even tho it was running at about 7 imp. The power supply is 28 volts and steady. I think the amps are around 8. The motors say Deepgroove 3.3 v,2.8 amp, 1.8 deg. , 280 oz. I will have to learn how to video with my Iphone to post a picture of what its doing. I am set at 25000,50, and 8. It runs very smooth and fast if you leave it in the direction it was running in last. No stalls or anything. If you go the opposite direction, stalls down and then starts back up to speed and will run all day in that direction with no stalls after stopping no matter how many stops and starts until reversed, then same old. I'm not trying to keep saying the same thing over and over, I just dont know how else to explain whats happening. I'm beginning to think I may have a computer problem. I noticed that when I click on something its slow to react. Maybe thats whats going on. Thanks again guys. Its appreciated. Vincent