My brakes work okay but I wanted to check the pad wear and I found that the front pads are wearing a little uneven. I read that the slide pins could be the problem. When o took out the pins the top came out just fine, but the bottom one was stuck in there. So I beat it out and greased it and then a few days later I tried to take it out again and it was hard to get out again.
What could be causing this and how do you fix it?