I bought a Navpilot 300 but the pump I got with it is the wrong size. The pump size I need is the Octopus 10-12 which I purchased. I am having trouble finding the right fittings for the pump. I bought 1/4 inch NPT that will screw into the 10-12 but the hose for the pump will not screw on to those fittings. The orifice of the fitting is too small to allow hose to attach to the fitting?

