Yaw yo-yo with VTOL Tilt-rotor Convergence

@hurzburg wrote:

Just hovered my newly converted Convergence in my backyard…only issue is a +/- 30 deg heading yo-yo back and forth…any ideas what is causing that?
I am using the same compass/gps location and type as Greg Covey’s build, BN220…no slop in tilt mechanics…tilt trimmed to 90deg/0deg with servo min/max when in QSTABLIZE/MANUAL and no yaw input…same pids as posted in reference build

yaw control works fine…just slowly oscillates back and forth 30deg at neutral

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