CB
My copy of ProPlan shows rear seat arm to be 74.02 in max wt 441 lb
The others are
Front 37.01 max 441 lb
Fuel 47.9 max 450 lb
Baggage A 96.85 max 119 lb
Baggage B 114.96 max 79 lb
Empty 1742lb at 37 in
mauw 2950 lb between 39.49 and 48.5
Not of course authoritative but may be useful.
Mike