has anyone tried heat treating the shafts? or are they already heat treated? Heat treating gives the metal enough energy for the grains to rearrange and gives the metal greater ductility. Should only take about 700 degrees for about 10 mins.

And there's got to be some way to Fill in the hollow part too. I don't have an axle to look at so I can't think of how.
I want to get a nemesis but I want to wait til the problems are sorted out.