sounds like you need more leverage, i know in have a mahoosive adjustable spanner i have that i only use for removin bb's, so buy one or try borrow one from a mate?
updated piccy's of the bikes:
http://www.pinkbike.com/modules/photo/?op=viewℑ=210357
http://www.pinkbike.com/modules/photo/?op=viewℑ=210356
http://www.pinkbike.com/modules/photo/?op=viewℑ=210354
the orange was built from spares so ive it a break lol,
Jonno
I just cut sections off it until it was at the size I wanted then filed the edges smooth, tis loads better now :- hope this helps, this should be in trials chat by the way,