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No better results by switching to the the mechanism from my fabrikator mini or cutting the spring shorter. Switching the drive gear tomorrow if my friend can find his spare one like pictured in the link. Also might switch to a direct drive e3d v5 to eliminate the hot end as the cause of the issue. But I don’t think that has much to do with the issue because filament is still easy to push through.
Maybe settings in the firmware? I did flash it for a different version to use the non full graphic LCD but it is your firmware and says MPCNC on the screen.