Sorry that didn't solve the problem. At least the fuel supply is out of the equation. One question - did you use your old primer bulb and hose or did a new one come with the portable tank? Just trying to confirm the bulb is not the problem.
At least now you don't have to worry about opening the coffin.
O.k., now I'll get out of the way and listen to sage advice from the black motor gurus. Take it away Big, Fr. Frank, Et al.