thought i would let people read about this as it had me stumped for 4 hours.. Turned on the beast as usual and got an error that said drive motor error and also left limit switch failed?? Vutek said motor and servo unit buggered but at 10k for new ones, i wasnt convinced especially as occasionally i could get the motor to move. After loads of fault finding i managed to solve it, the main things all the limit switch, motor and servo have in common is door sensors. Pushed in contactor and auxillarys on the door circuit with a screwdriver and problem sorted, overtime the coil gets weak and cant pull in enough for a good connection. So instead of 10k it cost £300 for new contactor and auxillarys.. Hope this saves someone some time,stress and cash if they get the same problem. Spo