Darin, thanks for the reply. I will check on the Mac Valves for the rear brushes and the prox switches. I don't think the Rear brushes were wrapping around the rear of the vehicle on the front to rear pass so that might be my problem.
Hey guys I have a Ryko softgloss that's not measuring car lengths, on short cars the machine will fully extend to the rear and front brushes will get stuck behind the car. The photo eye x20 appears to be working fine ( turn on and off when I block it) but the overhead ultrasonic X0 light is...