How do I do this

[stu9]

Go over the discs with some fine sandpaper/coarse emery paper and squirt some wd40 into the moving parts of the mechanism. Won't last long, but should get you through the test.

Really you want to strip the caliper down and rebuild it, only way to ensure it will fix the problem tbh.

They're well worn in and had new cables this time last year, hasnt driven much though, but holding on hills are fine, and taking away with it on (when seeing if both side at the back sink) is fine too, as he found out (tester) when going to get it. I'll just need to work it as in in gear and move with it on a few times and hope it works.

Got a few others things to fix too though