I took a metering diaphram and sprayed it with silicone spray on both sides 2 days ago. It was one I took out of a engine that did not seem to run good at all. The silicone spray made it flexible as can be...and looks like new. I will place it in my test engine and see what happens...that is if it is the same as one in engine! Anyway, if you guys got a diaphram laying around...try it also. I have sprayed carbs before and stored them for future use. Seems to work great. It Is $1.98 at Wally World. Take Care, Capt,n