Take the caliper off, grease the handbrake cable, wind the piston back a couple of times; check for any tears in the boot.
I replaced both my rear callys about 18 months ago, been fine, but now they've started grabbing again.
![rolleye :rolleye:](https://www.mk5golfgti.co.uk/forum/Smileys/newsmileys/rolleye.gif)
It might be just the excuse you need to get some Caddy rear calipers!
![party :party:](https://www.mk5golfgti.co.uk/forum/Smileys/newsmileys/party.gif)