I use a futaba 9650 in both mini 8s and use kimbrough servo savers on them as do everyone else at our track
If your servo is slim and the bottom of the kimbrough servo saver touches the chassis then just cut it off with some snips or a dremmel,
It's only the splines and top part that's needed,
Also with kimbrough cut off the 2 top corners leaving the 1 hole in the middle at the top,
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