I'm in the process of making an aluminium gearbox for the B6.3 but have hit a snag and hope that someone who has built one already might be able to guide me in the right direction.
Before making a complete gearbox, I wanted to make sure that it would mate up with the existing chassis and waterfall. So I made a test block as shown on the following facebook page:
https://www.facebook.com/photo?fbid=...08322764332516
The mismatch between the block and the waterfall seems similar to that between the waterfall and the original gearbox.
So what are you good people doing to cope with it?
I suspect that you just bend it until you can get a screw in and just leave it.