ha...don't worry about cutting out the driver holes until its on...i put a piece of tape at the top of foam, drew a dot at the center...did the same at the bottom...tape on the speaker again dot drawn in the middle same on the top woofer ring...peel off the back 1/2 way, set the top make sure bottom dots line up, pull off the rest of the backing and sort of guide it into place...the stuff i used was stiff so once it was lined up it was simple...
then cut out the holes for the drivers...
put the driver in place where it should go, use a finish nail to search for holes...once you find 2 the others are easy...
badabing....