i had some stutter in my pitch control, and it was squeaking. i regreased the joystick, it lessened the squeaking and the stuttering at lower resistance. didn’t solve it entirely. used silicone lubricant, spray type. i hope it helps
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edit:
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i fixed my stuttering pitch control completely. [https://www.ifixit.com/Guide/Thrustmaster+T+Flight+Hotas+4+Spring+Replacement/98620|follow this guide] until step 6,
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* turned the joystick upside down & did not take out the spring nor clean off the red grease, but instead applied more, used silicone lubricant, spray type., .
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* sprayed the rails (where the joystick makes contact with the housing), once when joystick is neutral and at then at the 8 directions. (total 16 times)
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* when you put the cap back on, i moved the joystick to negative pitch (the direction where it was stuttering), and screwed on the cap.
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* before i reassembled the thing, plugged the joystick on to the computer and stuttering is gone.
i had some stutter in my pitch control, and it was squeaking. i regreased the joystick, it lessened the squeaking and the stuttering at lower resistance. didn’t solve it entirely. used silicone lubricant, spray type. i hope it helps