I'm on my 3rd caliper on the front passenger side in 2 years. They end up sticking after 6 months to a year and wearing out the inboard pad faster. I've replaced the lines as well with some high dollar braided ones so it's not gummed up or deteriorated brake lines. Also when I replaced the pads a few weeks ago I noticed that the caliper piston is really hard to push in. Yes I did remember to take the lid of the brake fluid reservoir. My friend has had this same problem with his 97. I tried searching on the forum and didn't see anything specific with this problem. Any help is greatly appreciated. Now that steelhead season is over I've got time to do some much needed maintenance. My truck is a 96 4WD