The bane of my existence is the Mooney flap pump. There's always an issue. It's either leaking, not pumping at all, or it's leaking (did I already say that?). For the third time in four years I've installed a new kit from LASAR. Only this time the kit had an interesting option. On the large piston instead of two leather spacing washers there were two rubber washers. I decided to go with the rubber instead of the leather. Magically, there's no leak out the air hole. And, the pump handle is now sp