I have a mossberg sa-28 turkey and it's over gassed. The load is tested and it's safe but the slow burning powder is overloading the gas system. I need the gas ports smaller. Would like to have them tapped for set screws with centers drilled out at ~. 050 then fine tune from there. Gun will prob never see more than 200 rounds in my lifetime and it'll be a dedicated turkey gun with only that load. It's that good . The 2 ports roughly measure .113 each. Anyone interested?