input shaft movement?

[captainlip]

im rebuilding the gearbox for the 2nd time and the rear box the input shaft has what id say excessive play in it, in the rango build thread ive tried all the methods of correct setup and cant seem to reduce the play, I believe this could be whats causing the gearbox to keep stripping crowns. gearbox case seems ok all clips together well and the shims are all in the right places.

not sure what else i can do