Here's my solution to the shock dis-assembly issue.
I made up a compressor tool using two pieces of wood and two lengths of threaded rod.
In the lower piece of wood make a counterbore (blind hole) that the lower shock eye will locate into.
In the top piece of wood make another counterbore that is just a bit larger than the outside diameter of the large painted shock tube. Then drill a through hole that is just large enough to allow the top shock eye to pass through.
In use, clamp the bottom piece of wood in a vice and set the bottom of the shock in the counterbore. The top piece of wood fits over the top shock eye and around the large painted tube. Tighten the nuts on the threaded rod evenly and it gradually pushes the large painted tube down. Keep pulling the top shock eye/shaft up by hand as you tighten as it tends to drop down as you compress the spring. When you have compressed the spring/large sleeve down enough you can access a lock nut that is tightened up against the underside of the top shock eye. With a spanner on this nut and a rod/screwdriver to hold the shock eye you can undo this lock nut and then unscrew the top eye from the shaft.
The chrome tubes are discontinued parts and I couldn't find any. I bought some other shocks off EvilBay but they were also scrap when they arrived. So, I couldn't actually restore my shocks in the end and ended up buying aftermarket shocks from Monkeybike UK. If your chrome tubes are half decent then get them professionally re-chromed. Expensive but it's the only way you'll save the standard shocks.



