Have you put the gun on paper to see where it's hitting? That's the first
You will never have the same degrees of freedom with adjustable components as you will with a custom shaped piece of wood. (The exception may be a PFS, but I still think a custom stock is still better for overall for)
Many custom stocks have adjustable combs for that reason. It’s the pistol and butt adjustments that exceed what aftermarket adjustment provides in many cases. Not all, but many. I truly believe spending the money on a custom for stock is some of the best money any serious trapshooter could buy, but I am admittedly biased by my own positive experience.Not ever having a custom stock made for myself, here I believe is one thing to ponder. If your weight changes either way or as myself my height has changed 1.5 inches less than years ago. Doc says compression in the spine. I would invest in an adj comb and butt and save $1500 unless a comb would not work for you using an upright head position.
adjustable rib or do you mean adjustable comb? If you mean rib then that will still be there no matter what kind of stock you have. For me the blaser factory stock is a bit to rolled over . I feel that having a custom fitted stock done properly will be a advantage but still having a adjustable comb and butt plate would be essential to me esp. If you shoot in different seasons and change clothes.The gun shoots and points great. I just don’t like the aesthetic of the adjustable rib and butt p.ad