Hi, I am trying to rebuild the rear brake on my 69FLH. My brother owned the bike before me and he switched over to Dot 5 fluid. He had a chrome master cylinder and it looks like the chrome flaked off, fine metalic residue in master. I have a new master cylinder rebuild kit, but have found the wheel cylinder is leaking also. Can I get a rebuild kit at a NAPA dealer, instead of waiting a week for one to be shipped? Any cross reference to an automobile cylinder? The one oem part 41740-63 wheel cylinder I found on line says to only use Dot 3fluid, Should I rebuild and use Dot5 or 3? Any way to flush out5 and use 3 or will all lines and switch have to be replaced?