Eric,I would initially take the palm shelf off your Morini grip,and then shoot 2 handed to get a feel of what grip alterations are needed,mark the points on the grip that need removing and get to work with a Dremel,a lot of people feel intimidated by doing this,but remember that you can always replace any errors with plastic wood,similarly note the points that need building up and infill with plastic wood,I recommend Ronseal high performance wood filler,hope that helps,if you weren't so far away I'd be happy to help you with it,hopefully someone on here that's nearer to you will volunteer
Neale
Steyr LG110 Hunter,AA410 in Gary Cane stock,HC, Steyr LP50,Morini 164ei,Morini CM84e,Anschutz 1417 thumbhole,Rimfire Magic 10/22,Anschutz 1913,Rieder and Lenz Z2,Keppeler 6mmbr