howdy all,

i have a new-to-me '76 R90/6 and the front wheel is difficult to roll because the brake is sticking or binding.

i tried adjusting the cam pin in the caliper and that helped a little but it's still not right. sometimes it's hard to turn the front wheel, sometimes it's almost impossible. there's no free play in the hand lever, no sponginess.

i think i am looking at a caliper rebuild, what do you all think? this was a tampa-area bike and maybe the salt air has hastened corrosion?

a rebuild kit is about $120 and i am wondering if i should also just go ahead and rebuild the master cylinder as well for another $75 or so?

thanks in advance for any advice.