Casual Hero.

Thanks for the info. that gives me a good idea about the usefulness of the different diameters. Do you know of a website that can explain some of the terms that you use?

A new indoor climbing gym has opened quite close to where i live. I've climed before and really enjiyd it, so this gym (and your info <img src="images/graemlins/wink.gif" alt="" />) might just get me started on a new money-guzzling form of entertainment <img src="images/graemlins/crazy.gif" alt="" />!!!)
thanks!