Varmintguy gave excellent advice on correcting the rear sight mis-position. I might add if you don't have a vice, try this (takes another pair of hands):
After removing the elevator as VG instructed. lay the gun on carpet with your helper firmly holding it against the floor so the rifle cannot move, using a flattened piece of deer antler for the pusher, tap the rear sight out of the dovetail, remembering to go left to right to remove it.
You will not mar the metal with the antler and it is amazingly tough. You should have no issues with the sight being difficult to remove. Sights that have sat in the dovetail since new can be a bugger to remove sometimes. That is not the case with yours.
Enjoy that new rifle!
