I built a mashtun manifold yesterday and put it in my 10 gallon cylindrical cooler i bought at Home Depot, everything fit fine inside ... but the section of copper i extend out through the spigot hole ends up tilting up at an angle when i tested the cooler with 5 gallons of water (manifold sits on bottom of cooler). the seal leaked a bit. should i put spacers under manifold to raise it? install more o-ring seals? other suggestions?