How to prevent brakes from binding?

I have a 2000 Lincoln LS w/150K miles. For some reason, rear right wheel brakes are binding - they are ''always on''. I actually had to replace the whole rear right caliper assembly just a few months ago. And now it's happening again. Any way I can fix it?How to prevent brakes from binding?Assuming your not referring to the parking brake the only 2 things you have left are the brake hose and the ABS unit. brake hose is easy enough, but ABS unit is expensive and difficult to replace and bleed.How to prevent brakes from binding?it needs a good brake shop..... if you have replace the caliber and it stil does it sound like something to do with the pressure going to them the spliter maybe