I have twin Yamaha 2006 200hp outboards. The problem is my digital gauge is showing a yellow oil level in my aux tank and that is stopping the oil pump from auto filling the engine tank. I can use the emergency switch to fill it on the engine, so I'm pretty sure its not a filter etc... seems to me the aux tank sensor/float in the boat may be faulty. Is there anyway I can check this or bypass the aux tank so that it reads green and the pump will work when the engine tank calls for oil? Capn Bob Racine Wi.