The manual that I found for the GP Super Chipmunk with 81 inch wingspan gives the chart below for the control throws. This chart does not tell me to use different throws for each side of the elevator. It does say to use different throws for up vs down on the elevator.

Ed

Wingspan: 81 in [2060mm]
Wing Area: 1000 sq in [64.5 dm2]
Weight: 13-14 lb [5900–6350g]
Wing Loading: 29–32oz/sq ft [88–98g/dm2]
Length: 62.5 in [1590mm]
Radio: 6-channel with seven servos
Engine: .91 – 1.08 cu in [15–17.5cc] two-stroke or
1.20 cu in [20cc] four-stroke engine


These are the recommended control surface throws:

ELEVATOR:
High Rate
1" [25mm] up
1-1/4" [32mm] down

Low Rate
5/8" [57mm] up
1" [25mm] down

http://manuals.hobbico.com/gpm/gpma1303-manual-v1_1.pdf