Upper gearbox covers
I think it was Cyrul that used this tip on the electric car (when driving TC3). The bearings-fit is a little sloppy, so by druilling a few carefully positioned holes one can fit small 4-40 grub screws to carfully remove play in the bearing seats. I used a 2.5 mm drill. On the rear box cover you only need one screw (pictured to the left).