I was looking to take time to write a thank-you to this Gemlux outfit, and here's my chance to do it. I ordered a piddling flapper valve replacement for about $6. The shipping was going to be about $12, so the order did not make sense. Voila!! Gemlux offered to ship my little order at their own expense. I know this did not make them $, but it surely did get my appreciation. I think I have owned over 10 boats in my life, and have used Gemlux product often. Only the best. Gemlux is the best. James Eubanks, Morehead City, NC