You've given me a great deal to think about over the weekend, thanks.

The machine I have doesn't strike me as being in any way flimsy, in fact when I saw it I was surprised at just how much I was getting for my money (which is always a factor in a production situation, where there are always other ways of making the parts I need).

It's quite possible that it's was me that caused the problems I've encountered by uninformed fiddling, it's obvious I need to learn a lot more about this stuff and if my work didn't keep me so busy (workshop during the day, designing and quoting in the evening) I would have made a start on that. One of the problems is finding good and comprehensive sources of information, what I have learned has been picked up in bits and pieces here and there.