I learnt a bit more about bike maintenance today... spent an hour yesterday trying to fix my sticking back brake... (OK I know very slow by most peoples standards), but I felt pleased that I had managed to adjust it slightly so it didn't rub (started rubbing on Friday). Today rode into town and it seemed to start sticking again... little tool out again adjusting that screw ... didn't seem to work... decided to cycle home and take it to the LBS instead. On the way home the treacle effect became so bad I stopped again, decided to detatch back brake just to get me home via the back roads. Thats when I noticed that the spring had broken!!!! So tied it up with a jubilee clip and went to the bike shop and I'm now the proud owner of a new back brake but a little poorer. I'm posting this incase anyone else is as thick as me and didn't know that the spring bit could fail - it just presented itself as a rubbing brake block. Should it have been something I checked when it started rubbing?