For anyone who is interested this is how I calibrated my fuel tanks.
I first filled up the tank and then pumped out one liter at at time using a graduated plastic container. After each liter was pumped out I marked the level in the tank. After the container had 2 liters in it I poured it back into the fuel jug and repeated until all the fuel was removed from the tank.
I then did the calibration test runs on the turbine like the CTU instructions specify. It was really not a difficult process. I'm looking forward to test flying both CTUs and refining the fuel factor.
Gary