If you think you have servo problems, many times it's the servo saver. The AE servo saver sucks, and the answer is to glue it together. That will not be good for the life of a low-end servo, but the good metal gear servos seem to take it OK.
While a 9.5 is not a lot of motor, many drivers here in the U.S. run 8.5 or 7.5. Here, 6.5 is too much motor in an X - 6. (Ellis, of course, will disagree. He can't count higher than 6...) If you gear the 9.5 properly, you should have no problem keeping up.
I run stock truck, with a 17.5 as the required motor. At most tracks I am geared 30/70 (!) with a D.M.S. spur. Two fans, one each on the Speed Passion motor and the Speed Passion ESC. They survive just fine.
So gear that puppy to the moon and let 'r rip.
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