Locked up FI spool and OT shafts

[Motorider]

So I purchased some locked up FI spools and OT shafts for the rear to take up the slop. Problem is, I can't get the shafts into the spools. I can force/wiggle them in about half way. With 4mm left to go in, I feel I will damage the differential or axle if I push any Harder. Furthermore, how will I get it out to work on the diff. I know I could probably file the a bit, but should I have to file new parts? The stock shafts fit perfect with no slop. I also shimmed the left bearing to get better mesh.

Thanks for any help.

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[LSXGMC]

The whole idea behind his stuff is zero slop, and yes it requires filing sometimes. I put them in a previous truck I had and they were snug as hell and very difficult to get apart, so slight filing would have helped there. I’d suggest filing down until you’re happy with it.

[Chiphead]

What he said. Beat me to it.

[Motorider]

Thanks guys, Im going to polish them a bit to get a push in fit that does not require a slide hammer for removal.