This applet will calculate the center of gravity for our aircraft, and let you know if it is within allowed limits.
Here's the data I used in calculating the value. I couldn't find anywhere in the Arrow manuals where it said what the maximum usable fuel was, or if the unuseable fuel is included in the empty weight. Anybody know?

It is the responsibility of the Pilot In Command to verify that the values calculated here are correct

1436U
Station Arm
Front Seat 37
Rear Seat 73
Fuel 47.8
Baggage1 95
Baggage2 108
Maximum Gross Weight 2300
Maximum Fuel 38 gal.
Maximum weight in baggage 1 120
Maximum weight in baggage 2 50
Maximum total baggage weight 120
4669J
Station Arm
Front Seat 85.5
Rear Seat 118.1
Fuel 95
Baggage 142.8
Maximum Gross Weight 2500
Maximum Fuel 50 gal.
Maximum weight in baggage 200