I should have said the 2 years wasn't trouble free. I had to rebuild the boxes twice in order to move the gears closer together to reduce slop and I've lost count of the times I had to adjust the angle of the final drives as the bushes wore down. This is why I need bearings. Those steel gears from forgebear are what I'm after, only I'll need to fit bearings in the final drives. Anyone know how to install bearings in these? Cheers chaps