Another good source for sleeves is car exhaust centres, I work in a garage and never gave it a thought at the time, I bought a set for my winder but seeing all the different dimensions of exhaust pipe that was being thrown out it wouldnt have taken much to make almost a complete set from these.
Bob, I agree when they said they had never had problems, I bet more than once they had distorted springs, I know I have removed a few now with my spring winder and I know full well it wasnt me that did it!
http://www.ebay.co.uk/itm/Ollie-Baker-style-Mainspring-Winder-Sleeves-/220970219083?pt=LH_DefaultDomain_0&hash=item3372d9f64b check this listing out for a set of sleeves if you dont fancy making your own.
If you fancy having a go at making a spring winder like the one I bought from Joe check this out http://mb.nawcc.org/showthread.php?43669-Build-Your-Own-Spring-Winder
Bob, I hope its ok to put links up from another forum?