EDIT: looking at it again, I would actually make an aluminum piece that connects all four mount screws together and will make the contact patch much larger than 4 screw heads.
Maxx - FLM, MMM, CD Med.36x706s
Raja - FLM Ext. MM, 1512, 4s
SC8ight - MMM, 1520, 6s
D8T - MMM 1717 6s