I don't get it --- a 28 in a 30 spline?
You'd have to be some sort of gorilla with a 30# sledge hammer to try to drive the wrong axle in but I think you'd bust the carrier first if you somehow did it anyway. .
In spite of the diameter differences, there's no way you can hobb new splines on an axle with a side gear (not a spider --- spiders are the ones on the cross shaft).
I just had this same situation --- as I'd forgotten the 28/30 spline differences and I caught my mistake before the Eaton got shipped --- phew
!
The 30 spline axle will not (I believe it's impossible to ---) get it past the carrier I/D ends --- the holes are too small and if you want to run 30s, you can't.
I'd be more tempted to say the axle bearing got hooked onto the thinned-out axle as it got caught on the deep lip. Mebbee ...
I have a short --- very non-professional video of a 28-spline axle with the extreme original neck-down for you to see.
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