I purchased a pair of Polk dX 12" subs from Crutchfield as an "open box" buy. The problem = no template for my enclosure. I think an 11.25" diameter hole would be about right but I don't want it too big. Should I just cut it smaller than it should be and then slowly enlarge it until it's perfect? Also, does anyone know if the MOMO grilles for the mm124 subs would allow enough clearance for the traditional dustcaps of the dX's? Best grilles ever!