I've tried cleaning and re-lubing the old ones, as well as installing new replacements (including the boots and upper pin bushings), but still have the same problem with the pins being very stiff after only a few months of use. When I put them in they always seem fine, but when I check on them after a few months, I sometimes need to use pliers to twist and pull on them to make them budge. I've also tried different amounts of lube - a light coat, just enough to coat the pins, as well as filling the hole with enough lube that it oozes out when the pin is inserted. What's the proper amount? The only thing I haven't tried is honing the caliper mount, but with no lube at all, the pin slides in and out fine.