My girlfriend isn't too interested in this so I had to share somewhere!

Yoke taken apart, sanded any rust off and painted with zinc primer and Plasikote BBQ paint - nice matt-with-slight-sheen finish, similar to the original finish.
I had to replace the bumpers, found some (
http://www.videogameparts.com/product.sc?categoryId=-1&productId=389). Very pleased with the service, and the parts themselves. Took 5 days to receive these from the US (to UK).
Also replaced the thumb buttons & springs:
http://www.classicade.com/trigger_kit.htmAnd the microswitches:
http://www.happcontrols.com/accessories/95411800.htmWaiting for a connector to arrive from Bob Roberts (
http://www.therealbobroberts.net/conectas.html - .084 Plug & receptacle 12 position w pins & sockets xy mono). Thanks to fa001 for pointing me there... When I receive this I can hook it up to a spare AKI and see if it all works. The only potential problem is that the pots might be worn out, in which case it is not too much hassle to replace them.
One thing I can't decide is whether to use original SW artwork or something custom...