Hi Grover: Thanks for the reply and good information. I am about to try "staking" the valve. I am also going to change from the Shell 100 to Shell 15w50 that I have been using in an O-470G for a number years. Would you be good enough to explain what the "Rope Trick" is. I think I may know what you mean but I would rather have you tell me. Thanks again: Maynard, 99843
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