Hi again has you can see new to the rv thing but very handy, just checking brakes and bearings, I have 12 inch Dexter drums, the current magnet wire color is white, I know these where changed 2 years ago,(have work order saying so) on front axle, so not sure what size the axles are, 29 foot rockwood 2 axle gross says 10900, so 5200 sounds lite to me how do I id the brakes? thanks for your help as always. Gil