rear axle casing bend?

[JonE]

I know there was another thread somewhere, but I'm starting to wonder whether the difficultly getting my O/S spring pin in (I ground a small lead to push it home) could be indicative of a slight bend in the casing on that side. Whilst it might all sort out when I put the bearings and hubs on, that halfshaft feels quite tight to one side of the space it emerges from.
Am I overworrying about this, or is this tension which will quickly go once it all starts operating as one unit? Thanks...