Logitech Yoke - throttle quadrant issues

Hardware issue I know, but one worthy of caution.
Got a new Yoke from Logitech to replace one where the whole thing went blank and wasnt even detected in Windows.
Replace Initial Problem with New Problem
Now the throttle quardant (connected to the Yoke PS2 port as required by Logitech) sends all sorts of wierd inputs if moved at anything other than an impacticably slow rate.

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