Hey guys, its been a horrible day for me and my car. its a 2001 chevy prizm (corolla clone). I was swapping out the rear shoes and drums. Checked the rear brake cylinders, no leaks. Car brakes have been a bit spongy for the past few months. Get everything all tightened and closed up, start driving, brake pedal is VERY spongy. The parking brake works maybe 25%. I take the wheels back off, one of the rear brake cylinders has exploded. Car is an '01, the brakes have never been done from what I figure since its a rust bucket in there. Both cylinders looked very rusty. My question: Could the cylinder have failed from me over tightening the adjustment screw?