Like the title says, my rear brake is sticking. I know the brake is not too tight because if I close the pads manually without the use of the hand-lever, they release properly but when I use the lever, they stick. Any thoughts? I just bought the bike, its previous owner rode it twice, and it shows, the thing is in mint condition so I don't think the break needs replacing. It had been sitting in a garage for 6 years though so maybe some WD-40 will do the trick? Any thoughts or suggestions will be appreciated.