Hi Tony, Not sure if the last reply went so trying again. The numbers below are from a sample W&B which doesn't have the Aft Seats numbers but I know the Arm is 96". Lbs Moment (lb-ins.1000) Empty Weight 2314 85.5 Fuel 522 24.3 Pilot + Co 340 12.6 Centre Seats 340 23.8 Aft Seats Baggage 98 12.5 Also I have the Arm's as follows but when I use them in SD they don't work: Pilot + Co = 37" (32" - 43") Centre Seats =70" Aft Seats = 96" Baggage = 127" - 145" Hope this helps with your replay. Thanks John