Had drive go out on job last week and received new one yesterday. Changed it out with new one from spares after change out I am able to run up no problem and down only allows a few ft at a time. Once I get close to bottom terminal it will run down w/o cutting out w 83 fault. Does anyone have any more info on these drives and or controllers. I have an installation manual but am sure an adjusters manual would have necessary info. Thanks a lot and work safe.