Ridge Runner

Do they make cast on and cast off shims for a Montefeltro Super 90? I only have shims to raise or lower drop.

I tried what you suggested about mouting of gun and squeezing trigger. I also tried different choke tube and patterned dead on don't know if it was me or choke tube will try that full choke when I have time thanks for the help.

Patterned with full choke at 30yrd and shoots about 6" to the left.What needs to be done to shoot straight?