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nice number Diver, 3 k of ballast, pretty soon we will all have ballast envy :). any one topping that?

Thanks for keeping everyone posted diver. Always nice to know how problems are solved

Your going to want 4 of these puppies to solve your problems
http://www.wakemakers.com/check-valve-fitting-1-inch.html
or the 3/4 if thats your line size

are you sucking air from the bag you shut off, thru the shutoff pump as the fill hose is on the top of the bag. and these may be closer to the scupper. put a simple plastic ball valve in the forward...