Hi All: just joined up! I have an 82 Interstate, I,ve owned it for about 20 yrs now. Just recently I had my rear brake pedal go hard and the brakes pretty well locked up tight. After sitting over night the brake pedal was normal, after testing it again the same thing happened after a short ride. I,m going to rebuild the caliper and clean it up good. I was wondering how the piston,s should slide into their holes? Should they go in easy, or have a lot of resistance? When i took the caliper off, I used the pedal to get the piston out, one came easy and the other was a fight. The 2nd piston was hard to get out or push back. Is this normal for pistons to be this tight? Thanks Les.