| Yes! Experienced the same issues with one of my Z1 TBs until I sent (at least the problematic TB) it out to @RobZ 90TT for prepeller correction. They were not closing fully. :( Had to occassionally "blip" the throttle to force them to close completely. It's an easy fix. :) They just have to be honed a bit to ensure they close ccompletely. I'm just guessing this is your problem and one way to fix them [if] they don't appear to close fully. I suggest you pull them off and check closly to determine if that is the case. Or try another TPS. Good luck!
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