I couldn’t tell if your wobble box was moving and rattling more than normal or not, but it seemed it might be. Look those 6 bearings over, particularly the drive bearing. You might have a bad wobble bearing, and you don’t want to wear through the race into the bearing housing. You would probably hear it slapping when the sickle is running, if you know what to listen for. The sickle will run quite a while with a bad bearing, it doesn’t just stop working.
