OLD LGB Coach Bogie replacement

While changing my LGB coaches to use my version of Raby's Knuckle coupler (http://www.thingiverse.com/thing:1989545), I found that very old LGB coaches were made with the hook and eye as an integral part of the bogie, and so cannot be easily replaced.

I therefore modified the bogie I had used on the 12 ton wagon, so that it now works with these old LGB coaches. I also redesigned the axle so that it uses 3*3*7 mm ball bearings. This should mean that the wheels /bearings have a longer life tha