As I was feeling a bit guilty about the lack of progress on this I have started to do some work on refurbishing the machine, had it stripped right down with the intention of repainting the frame but not going to bother with that now as it doesn't really need it.
Took me a few hours to clean the frame though, it was absolutely caked in swarf (aluminium & sawdust) mixed with a dried cutting fluid which I thought was an oil based fluid but with it being so dry I'm not sure.
Frame is now nice & clean which is how I know it doesn't really need a repaint, also stripped the old acrylic strips off the the aluminium "T" slot table bits as it was non existent in parts & generally quite thin having been resurfaced a number of times acording to the previous owner. , scrubbed them ready for new acrylic strips.
Didn't take any pictures of it stripped down but will try to remember to take some as I build it back up.