8.75 green wheel bearing end play?

Hey guys,

Working on installing the dr.diff 11.25” rear disc brake kit on my 1971 Plymouth scamp. I’ve got new snap ring style green wheel bearings pressed onto the axles and I’ve got the axles installed into the housing. However, there seems to be a decent amount of in/out movement of the axles if I push and pull on the axle flange. Center section is a 741 open gearset. These are the axles that came with the car when I bought it and they are in what I assume to be an unmodified a-body 8.75 housing. Wondering if these axles should have any end play at all?

pics showing about .125 of end play

Any ideas?

Thanks