Just got my first Perazzi not long ago, about a week or so ago. Love the gun, well balanced, points well and what not. Got an mx2000 unsingle only gun with the lower rib. Now I am in search of a set of double barrels. Have been doing alot of research across the web, seems like a set of mx8, mx2000/3 or mx2000/10 or RS models will fit the bill. Now is my question for Perazzi owners, will a fixed rib mx8 barrel shoot somewhat high, around 90-100%? The mx2000/3 is a sporting clays oriented barrel to my understanding and adjustable with 3 notches ranging from 50/50 to 90/10 IIRC. The 4 notch barrels have a much higher rib built for the stock and match to single barrel, but will work with different comb height I'd assume. I do not have a comb cut at the moment but should be taken care of shortly. Just wanted to reach out to others to see what to do.