Hi Jason,
The co-operative effort Yvette refers to was Rene"s (her husband) tutoring and re-design of the boiler. It was felt that the boiler should be given to the gentleman in Birmingham (whom she had met at his workshop some years earlier on a visit to the UK and was by then professionally manufacturing boilers for your members) due to the specialised nature of these boiler design changes.
All other parts including all wheels, connecting rods, side frames, bogeys, cylinders/linings, valve gear, steam pressure valves, steam reversing gears, steam injector valves, steam whistle (true to tone-she built 7 before she was satisfied) etc etc were machined and assembled by her. The only other items not manufactured by her were the BA bolts/nuts.
Unfortunately I will need to dive into our collection of ME's to answer your last question. Will revert.
Best regards,
Brian