Komatias,

Thanks for this,

It sure is reassuring to hear how others dealt with this problem before reaching for the sledgehammer!

My engineers square is what I used to establish where the problem is.

I will try the screw-loosening approach first.

I'll let you know how I get on!

I am a couple or 3 weeks away from moving premises so I may wait until then before attempting the fix.


Cheers,
KC