Hi!

The gears are CEI 194.392 (9x47).

Pinions needed the 4mm shims, without they sits too deep.
I decided to add the extra shims together with original pinion depth adjustment shims (had them already), not under the first bearing on the pinion axle as in your earlier picture. Bearing preloads needed to adjust as well.
The pinion axles were little shorter than original, I think it would not be problem.
I spent few days installing these.. Put together, measure, take off, add some shims, so on. But it seems pretty straight forward job to do if you have time.

Hope this helps. smile