Hello Paul - Thanks for the info about the Teflon Packing you used. I had hoped you tried the Gore product as in the post because I'm curious of it. You mentioned I might want to provide a few details about my boat. She is a 1963 37' CC Constellation Hardtop Express designed by A.W. "Mac" MacKerer. Power is twin 454ci 350hp Chevrolet/Crusaders of 350hp each. Shafts are 1 3/8" SS with the 3-blade props as you used to have in your Commander. Marine gears are the P44 Paragons. She weighs 16000# and tops out at 4300 rpms and 34mph according to the GPS. Our cruising grounds are the eastern shore of Lake Michigan not far from the Holland, MI plant where she was built. Regards, Roberts