I tried to drill the holes to the next larger size to no available. Nobody I asked could drill them even after trying it. The Truetrac is much harder then any available drill. None of the drills did even scratch the surface of the hardened metal. But it was very nice to see the deeply impressed faces of the workers trying to drill the hole just a little bit larger
My workaround was to buy a new set of gears. That workaround involved a lot of new parts and the precise setup of the new gear set.
Not the best news, I guess...