How many of us are there? Owners of Dodge based RV's?

Griff!! Your a wealth of information. I got to have a look over this all. Thanks kindly. I'm leaning on changing both the master cylinder and booster. Been afew years but just figured I could tweak something to get that dang peddle to go up just a tad to switch off the brake lights.
When the engine is off and the peddle is pushed it returns back enough where the lights go out.
Other than that brakes work perfect. Nice and firm, no spongy peddle, just changed all pads drums calipers.
A work in progress.