I found, through experience, that if I lengthened the rod, it became sort of floppy loose and had a tendency to rattle. By shortening it and taking that slop out of it, the noise went away. Anyway, to your point, if it is running vibration free and quiet, best leave everything alone. I watched your first videos and it sounded like mine did when it was making that noise. That's the only reason I mentioned it. I'm happy if you are happy. Now, go make sawdust. Also, I'm sure that others will gain something from our back and forth's and your videos as it's a common problem. Most people don't have the know-how to take these things apart and fix what's wrong with them.