Hi Viv,
Try these:
http://www.hopetech.com/wp-content/uplo ... ploded.pdf
http://www.hopetech.com/wp-content/uplo ... earHub.pdf
I think the front ones are just pushed on (they have an o-ring inside) and the rear ones do up with an allen key but I haven't looked for a while.
My seat clamp has cracked on my Pace leaving me bereft of my (current) favourite bike. It's the bolt on one that everyone had trouble with so it's no surprise.
A long shot but has anyone got one spare?
I've got an M737 cassette on my table beside me and a pair of M535 pedals on my bookcase beside that. Also a couple of headset spacers on my stereo in front of me.
Oh - and 4 of my bikes, my wife's bike and my little boy's bike and scooter behind my sofa where I am sat.
Oh - and if you're around for a bit prepare for an empty bank balance... Retrobikers are a bit like VW camper owners (if you're like me anyway because I'm both) - always destitute but happy with it :)