I used the Dremel cutting wheel to remove part of the flange on the tip to clear the AEX wedge. I then matchdrilled the rudder and tip. The pneumatic squeezer made quick work of dimpling the aluminum and I countersunk the fiberglass with a grinding stone on the Dremel. I next attached the 1/8" rivet washers to the fiberglass with E6000. Once the adhesive sets I'll rivet the tip to the rudder with the CS4 pull rivets.