I am still getting to know this 22’ Cdory, got it used last fall. Year 2000. I have two built-in gas tanks that have not been used for years. I replaced the fuel filter and line to motor with a primer bulb. I am unable to draw fuel to the motor using the bulb. Maybe not enough suction power? Also not sure about the lever that directs flow from either tank. It seems like a priming issue, not sure. Any input welcome.