Evening all, thought I would try and replace my front brake pads and found myself with some bother. I couldn't get one of the pistons to go back in and upon removal of the caliper, I can see that the piston is rusty. Can I send this off for refurbishment or is it better to buy a new one? In either case, where should I try? I've read about the caliper refurb kits that can be had from places like Redline etc but I've never done one before and would worry that the condition of the caliper would mean that this might not be successful. Advice appreciated, John