My forearms are killing me from wrenching them all into place. And you basically never see them in actual industrial applications. Red loctite on everything, and hopefully I don't have to deal with it again. The fastener quality on this thing is very poor, I think I may have partially stripped the threads on one of the u-bolts. There are specific tools for packing bearings, or you can pretty easily do it by hand. I'm just gonna do these by hand, I don't do enough mechanical work to justify more greasy tools laying around the house. Sure would be nice to have a shop, or even a flat place to park. Driveway is so steep that I have to clean it after a storm or my car can't get out. Finished my assembly by flashlight last night, and the trailer frame is leaned up against a tree right now so it doesn't slide down into the neighbors' yard.