Ok, to save the stupid unconstructive 'you're doing it wrong comments' shall we assume everyone on here has a vague idea of how to change a tyre and is just using brute force for the hell of it and wants a stronger lever or just leave something constructive like rob and charlie?
My apologies, I had assumed in my original post I had provided quite enough detail for anyone to be able to find the two videos via google, or indeed any search engine. However, since it appears people need spoonfeeding...
http://www.notubes.com/movieztr.phphttp://www.singletrackworld.com/article.php?sid=1839Both pretty much the same thing - its all about gathering slack.