Did manage to get hold of some brass strip, but having had time to think about it decided that it would be overkill, after all when the engine is on the track there is no weight on that strip. The top pic shows almost how it came off, part of it was partially broken and the rest separated when handling. I also noticed that the brake shoes were rubbing on a couple of the rims, someone else noticed the same problem, which may also contribute to the broken gear.
I removed the brake system and cut two pieces of 2mm plasticard using the original strip, taped together with masking tape, as a pattern and screwed them into place to hold the axles, bottom pic,
just noticed the brake hangar has slipped out of line.
Then salvaging the broken pieces of the two strips I cut out the pieces with holes in, enlarged the holes too 2mm, and superglued them in place for the brake spindles to sit in, this cured the rubbing, not pretty but not really noticeable when running.
