I suggest try a pattern board. Shoot it at 40 yards and see what your POI pattern is. Take it to a stock bender (lots on the board, ask members for recommendations). Two bends would cost you at most 2 C notes. I have a 410 LC that I could not hit the broad side of a barn with. After I patterned it at 30 yards (std for 410's) and had two bends done (cast on, I'm a righty who shoots lefty- cross dominant) I easily got 20/25 at trap with full chokes at 27 yards consistently. If you love the gun good enought, take this route.
I don't think the gun is worth spending the money to have the stock bent in this case,but thanks for the suggestion.