I spot face as well but I also use medium strength Loc-Tite too. The set screws and lock nuts provided by Borgeson, and probably the others - the screw is way too long and one hit the header and that skinny nut - less then a great way to fasten the screw. I can assure you with bloody and scarred knuckles that this arrangement is tight after having to disassemble my upper u-joint to remove the column for repaint.