I just switched to a Savox 1250 with the Macpappy case mount http://www.mcpappyracing.com/store/products/Savox-Servo-Case-Core.html it fixes the centering mounting issue the servo has and makes for a lightweight and secure mount. Bolts right up to chassis drilled for standard mini servo holes (JR 3650, Futaba 9650, KO 951 holes). Before this I was running a KO 951... Couldn't tell the difference between which is a good thing.