Well, took it apart again and I cannot see where anything is making contact. Not sure what happened to the armature fan, maybe something in production hit it. Not sure. The bearings feel ok but I think I’m gonna replace them. It’s got to be something with the rear bearing. Maybe under load is the only way you can detect it. On that note, what brand and type bearing would be the best? Don’t care if they are pricey as long as they are good. Thanks