It helps that the engineering of the model is first class - I was expecting to have trouble in fitting the bucket wheel between the frames - either too wide, or too narrow - but it was spot on. The difficulty was in lining up 6 points of contact simultaneously. It took a bit of trial & error to find the right way, and a bit of luck!.
I went round and put CA on the joints, I think it's always gong to be fragile & vulnerable, by it's very nature, but it is what it is. Almost at the finishing line, but I'm still looking forward to the addition of the final bits..........................
Dave
ps. I only found one comment from another masochist who had made this - " it's no cakewalk"