[QUOTE] Not so much the nitrogen, but pre-historic pingfuckits which would leap out and remove limbs ;-) [URL]http://sackheads.org/~caseyc/triumph/reference/Mark%202.jpg[/URL][/QUOTE] Ho-lee-shit. I've never got involved with British classics, but I've always thought that sprin hubs were a pretty dreadful idea. That diagram has done nothing to change my opinion.