I've replaced 2 calipers in the past couple of years for seizing pistons. I finally bought some rebuild kits from Rock Auto - 2 front, 2 year - to keep on hand. My front left caliper seized the other day, so I rebuilt it today. Got it reinstalled, and started bleeding the brakes from the rear right corner - snapped off the bleeder screw. No problem, I went and got another bleeder screw and some screw extractors. The screw extractor broke off. I have three caliper rebuild kits, and I'm going to have to buy a new caliper when stores open tomorrow. I love this car, but it really pisses me off sometimes.