The front nearside brake caliper has been sticking for a while. It took a month to get a reconditioning kit from Renault, but taking the caliper off takes 5 minutes. Problem is getting the piston out. I've tried 3 different bodge methods to no avail, but putting the caliper back on the car and pumping the brakes came closest, so I'm going to try that again tomorrow.
After that hopefully a good clean with fine wet & dry emery and fit the new seals and I'll get another few months out of it.