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nc IN | Trimble Autopilot on an AutoTrac ready JD 9760 using Trimble AutoTrac ready platform w/FmX on RTK. Problem is the rear wheels will intermittently start fluttering back and forth while engaged. Jerks hard enough when they are moving back and forth I'm afraid something in the steering could get tore up so I disengage and drive manually. Sometimes can go 2-3 rounds with everything working great then just starts fluttering out of nowhere. If I leave it disengaged for a while I can re-engage and it will usually run ok for another round or 2. Stays on-line when it is acting up but can feel the wheels jerking back and forth. It has to be something specific to the combine because I transfer the system to the planter tractor in the spring and works fine on that. Seems like we have tried everything: updating firmware in the fmx & nav2, going backwards on firmware, re-calibrating again and again, re-loaded vehicle profiles, and most recently adjusting deadzone values in the TAP parameters. Is it possible something in the Deere steering valve and/or electronics could be causing this? Any and all thoughts/suggestions are appreciated.
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