I had warranty issues on one unit and it was a PSI issue was it was resolved in all due time. I have had no issues with the other 9 units I have here other than operator issues (also known as abuse). I have all but 2 on power mode 2. They pull ramps and seem to be very well thought out. My only concern is the motor is a non-interference type and Yale says to replace the timing and counter balance shaft belts at 5,000 hours. Will miss the Mazda powerplants. Time will tell on these units