Hi ox,
I just replace the axle stubs, I put them in the lathe and cut a circlip slot with a hacksaw. Depending on the wear you could weld them up but the issue is getting them round again. Tyler was meaning if you leave the plug too close to the body and you are trying to clear the crank of excess fuel it might cause a flash fire but as you have been around 2 strokes you will be aware of all these sort of things that 2 strokes do