I have a Fox A grade that is stocked very similarly with double triggers. I shoot zz bird with it.

A problem I have with shooting sxs doubles is that my dominate eye switches sometimes. I believe my brain gets bored with concentrating. My answer is to put white electricians tape on the rib and taper the width from breech to barrel end. This helps to create a single narrow pointing plane and sort of makes the rib look higher than it is. I was told this old trick by a pigeon shooter and it works for me.

W. E. Boyd