Sorry Bagpuss, I misread your post. Anyway I hope it helped someone else. If it helped no one, I'll turn it into another point related to this thread:

-- Find the easiest way to play things. If you can find a way that works better for you than the norm, do it. This will help avoid some of the physical problems musicians can come up with. By looking for the easiest way of doing things (not just playing an instrument, by the way) you'll become more aware of what your body feels. Something that probably should be obvious, that I still haven't learned to do. Seems like there's too much going on to notice these things.

Jason.