Hi Lee,
I have used the motor bogie, just for the pick up holes.
I have attached a couple of photos of the bogie. It differs from the instructions, so not sure which motor/gearbox would be used, or how it would be fitted.
The chassis is very straightforward to assemble and solder, the nickel silver is thickish so a 50w iron minimum is needed. The cosmetic frames screw to it, and they can be glued together with Araldite or something similar.
I know it's easy to say a soldering job is straightforward, and may be daunting if you aren't used to it. But N/S does seem to solder easier than brass.
I tack soldered the pieces and ensured everything was dead square on a sheet of glass before running a fillet along the joints.
I may have told you before, I started with a Conneseur BR brake van. It has a little bit of everything to build your confidence and Jim is one of the most helpful guys out there!
Thanks in advance for the photo, the ones you have already supplied are excellent!
(please excuse the screws, they are just temporary ones I had lying around, as the ones supplied didn't fit)