good point...i actually painted myself into a corner with the cutting away the mask...I was concerned about the retention of the vertical position so Idrilled the hole out small to actually thread the hole for extra slip resistance..unfortunately, this led me to cut away the mask to be able to 1) get the screw to tturn and 2) to go into the hole.
i might widen the hole and add a washer to reinforce the area and then cut down the screw as you suggest...i will have to improvise a vise
i also am not too worried about the area's strength as the screw and the mask mount should limit the ability of the frame to flex and flexinng is what would break it...still most likely weaker, but not that great of a loss of integrity in my guesstimation







