I sure hope my wife does not read this article! Here's the kitchen tool I used for seating the butyl. In combination with the waxed butyl paper this end worked well. The other, with the white silicone "spatula" part removed, worked great for stuffing it in between the hull and port.


I applied all the butyl with the clamps in place. When the butyl is finally installed, and packed in place, you can quickly remove the clamps, install the trim ring then re-place the clamps until you get the machine screws in place.