i have a 52 3800 new brake lines and shoes,now the cyclinders i took apart today had to drive out the old pistons ton of crap etc honed with lots of fluid and can still see the old mark from the piston although it feels smooth, my question is had any luck with cylinders not leaking even tho you can see the old mark?if money were not a problem i would buy new cylinders, but prefer not too, this is thelast step in replacing everything so i am paranoid about them leaking on the new shoes, thanks trying