DS8231 is what I was using on all but Rudder. The OS 120 AX pulled the wings off the ST90

Specs

Type: Ultra-Precision Digital
Torque: 88 oz/in @ 4.8V, 113 oz/in @ 6V
Speed: .22 sec/60 @ 4.8V, .19 sec/60° @ 6V
Dimensions (WxLxH): 0.75" x 1.54" x 1.36"
Weight: 1.73 oz
Bearing: Dual wide spaced
Motor Type: Coreless
Gears: Nylon
Application: pricession pattern, Jets