Have boat moose hunt planned fall of 2019. This is my dilemma. Stiller Predator LA with 8/40 holes for screws. Luepold 30mm VX3i 4.5x14x40 scope of choice. I have tried Talley lite weight rings lows and could not get scope low enough to bore sight. They don't make extra lows with 8/40 screws. Would a one piece 20 moa and extra low rings get me in the ball park. Any help most appreciated.