Looking really great, Alan. Having built one of these in 2FS I have a soft spot for them. In fact two, if you count an early plastic bodied attempt on a butchered N-gauge Atlas chassis, which was never a good runner in the first place and wasn't helped by the major surgery it underwent! It's a pity there are no 'like' and 'craftsmanship/clever' buttons on the forum!
How to do it, advice sought and offered.