Thanks for the motor link - I've bought a few of the 100/200 rpm varieties just so you can actually see the blades rotating.
Suggested further visual bits not usually shown in drawings- I have no idea if these already appear in the kit or whether you already have them in hand;
- the rather chunky handbrake operating gear and shroud on the RHS rear of the loco frames
- two 'gull wing ' access panels on the front section of bonnet (similar to those at the rear of the tender)
- contrary to most drawings, I have never seen a photograph showing any mesh over either boiler or exhaust vents (the latter is likely to have had some kind of protection but if so, it was below any normal viewing line). I'll happily stand corrected.
- oil and water union each side of tender (roughly behind the side access steps)
- 'cove moulding' along the cab roof was a rain gutter.
- rear edge od cab roof had a gentle arc in plan
- nose front was similarly curved but somewhat less so than a Class 20 (this makes quite a difference to the 'look' in the larger scales)
- cab/tender gangway a single, shortened Pullman type (obviating any other buffering), tender rear LMS 'Standard' suspended with Pullman adaptor.
- tender frame cutouts differed in shape to standard BR due to lower pivot locations of the (shorter) brake hangers (twin cylinder operation on both GT3 loco and tender)
Cheers
Les