Paul,
Have you inherited one of Gav's boxes? Is it a 57k anglo or a duet? My 61K special would seemingly be similar. Is it hex or aeola? I can still stand for quite a while and play without neck straps but I've had it for about 40 years so I'm used to it. I could perhaps get a lighter aluminium case. It's currently in a very sturdy plywood one I made myself.

Guran, will get the Koot details in a mo.