I've made some progress on putting the final details (I hope) to my model of 3650, a BR period P4 conversion based on the Bachmann 57XX GW Pannier with an 8750 cab swapped from a K's kit. Fellow blogger Ullypug suggested that adding the sander operating levers at the front was worthwhile as they were so prominent a feature. Looking at the model at that stage I realised there were at least four other prominent features I had missed or needed to change: (1) the handrail at footplate level above the front step (2) the front lamp irons (3) the front windows (4) the bunker side hand rail on the fireman's side (5) replacement sprung buffers, actually Bachmann spares (plastic). Plus - I was not happy with the brake pull rods recycled from the original chassis so I replaced them with a brass version from a Perseverance Pannier chassis kit, (as I'll be turning that chassis into a 1854 Pannier chassis which had bent brake pull rods - a future project!). As for the sanding levers, they are bit over scale, from filed down nickel silver etch scrap, but painting them will make them less prominent ... Seems a lot of work on a 'fully detailed' pre-painted body, but then I only paid about £10 - £15 for it so can't complain. Here are some photos taken before painting all that added detail, cruelly enlarged:

Fireman's side front 3/4 view

Driver's side rear 3/4 view

Driver's side front 3/4 view

I'll post some more after a touch of dirty black and some red paint on those buffers, after I've added the little steps (sigh) ....