My new home made center sliperential

The only problem that i can see for now on my system is the gear mesh between the 22T pinion on the sliiper shaft and the spur gear on my spur adaptor.
The mesh seam to be a liitle slack, but not sure.
If i hold the spur and i try to move the 22T pinion, i can move the pinion back and forth a little bit, but for sure, it's little more than if i was adjust the mesh with a piece of paper.
And you know, i can't re-adjust them
To re-adjust them i have to make another complet mount........................

Anyway, i'll try it like that and if it's too slack, probaly i'll break the spur or the pinion.