I have a Rem 1100 LT 20 with a 28" Rem-choke barrel. It shoots to point of aim and patterns well. I bought a 21" vent rib mod barrel, and it was fine also. I decided to have Tru choke tubes installed, and I think it got bent in shipping. When I shoulder it, the front sight is to the left, and the patterns are about 4+" left and 2+" low now. Any hope ? Does anyone straighten barrels, or would it be cheaper to just get another barrel ? The installation looks to be correct.