My auto brake locked up in my driveway, traced problem to actuator, sent it to oldusedbear on west coast, returned less than $100, however all advice from web said replace rgs so I decided to replace it and the old adage don't fix it if it isn't broke applied.
In removing rgs the threads came out with it, needed a new adapter, not available at dealer as they only sell whole unit not parts. Checked with oldusedbear and he makes the adapter, two weeks more I had my part at $33 it was 10 times what hydraulic adapters sell for but that size not made. While checking system and researching I also came across how you can improve the system by adding lights, leds showing whether or not electric is getting to switches, when the pump is on and that system is working. More info than the idiot light on the dash will show. MH just turned 40000 but Oldusedbear said rubber o-ring in actuator changes to cheese at about 8 yrs same as tires.
NO WARNING SIGNS! Good reason for LEDs to get a warning.