Hi all, hopefully you can help. The parking brake has a habit of sticking so I don't tend to use it. However on an300 mile journey today I did, not a lot, just enough for a slight incline. Stopped on the toll road services and left it in gear, no parking brake. When I got back in after reversing out of the space the squeeling from the back wheels was hideous, everyone was staring at us.... I ignored it as its done it before, but once on the road at 60mph we had a very loud rumble and vibration from th back. I tried the usual trick of slowing down, putting the parking brake on and pulling the release a few times, and it did get better. However it keeps sticking, not fully on but enough to get the wheels nice and warm. I have no tools down here, any ideas? If it hadn't freeded off on the M6 toll it would have been a call to the AA. Do they normally stick and is it expensive?