Just a reminder, SxS's generally shoot flater than expected. It's in their nature.
Also, guns are like new baseball gloves. It takes a while to brake them in. It is always a source of amasement to me how quick even the best shooters are to modify guns.
I have a friend who both hunts and shoots clays with me. He missed a couple of easy Chuckers with me and immediately started talking about cutting the stock. He should have been talking about cutting his head which was off the stock when he pulled the trigger. That same fellow ran 100 straight at modified international trap and hadn't walked off the field and was talking about openning the chokes on his Perazzi.
The obvious point is you have to shoot the gun before you decide to modify it and not just once. Give the gun several months and make decisions based on experience and for the right reasons.
These guns are not stocked particularly high by the way. When I first got mine, I was concerned that it would be too low for me to shoot. Also, nearly all my field guns have recoil pads on them to avoid slipping when shouldered. I was ready to modify mine based on experience with other guns. I took my own advise, shot the gun, and found that neither issue was a problem.
Yes, gun fit is everything and this implies that the gun shoots where you point it. You don't know, at this point, that your RBL doesn't. Give it some time and it may surprise you.