RE: REMOTE FUEL FILL VALVE
"Different strokes for different folks"......I am one who uses the GP and Dubro fueling valves on cowled engines and like them. Yes, all the potential problums that John Buckner and Gray Beard mentioned are true, but I have learned all of their tricks and still consider them of value for the nice finished look and convenience. I've bought plenty so the is always extra filler probes in my flight box. My LHS has converted me to buying the Dubro brand, he claims they are better quality with less "O" ring failure. If you haven't used them before, try one and decide for your self. When new they have been trouble free for me, but after a couple of years they can start to stick etc.