I recently purchased a B machine from a previous owner. The owner told me he was having problems with the Y and X axis. When I got it home, I found that the clear cover had a tab broken off. I replace the cover and close cover switch and upgraded to a carve tight spindle, now everything runs great. I feel the previous owner did not know what he was doing and kept ordering parts ( all parts were under warranty for the previous owner according to Connie with LHR). I have a extra QC scanning probe, memory card reader, side panel with LCD readout, Z axis motor and controller for the memory card. I do not know if the parts are new or used. The parts look new except the Z axis motor.
Send me a message if you are interested.
Greg Brown