Replaced bent axle 1976 Chevy G 20

[Savary]

I put in a new axle on 76 Chevy 3/4 ton van. Got it from friend who bent the axle driving on ice and slammed into curb. Van has 33 k original miles. It sat in his yard for 40 years with the axle. I hadn't driven it much, but would that bent axle have caused irreparable damage to the spider gear?

I didn't rotate it after putting the axle in, c-clip, pin and bolt, in the differential. I just buttoned it back up in a hurry last night. When i went to put the drum on the axle just free wheels with no resistance, as if it didn't go through the gear which i know it did.

I keep wondering if there is something I missed, but I don't know what it would be.