That was me with my Ithaca 37 that I bought maybe ten years ago. Kutter suggested the fix and it worked moving the pattern for me down 4" or so. I always read what he has to say.

This gun is a friends gun and it is also a modle 37. It has a vent rib(mine is plain not that it should matter) and 30" barrels also. He patterned it when I fixed the FAIR Iside. We were shocked. When you look down the gun all you see is a bead.

I will start with a large bead. Do you recall which one you bought? Maybe it is larger than the one I bought. I found it difficult finding large beads.

So many guns, so little time!