Most likely the motor is touching esc, cables or power transcap...
Try to remove the top screw on the motor, (let the pinion stay on the motor) then carefully turn the motor untill bottom screw is on place. Then fix this screw a bit. Then turn the motor until you find the top screw hole, then adjust and fix....
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DEX 210, 410 and 410Ultra
Kyosho Lazer FS2 SP
Ultima RB5 SP2 WE and Vega SP2
Ultima SC-R and DESC 410R
BOMBK
Norway
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