Glad to hear that you've not encountered any issues with the screws. As for the Tri-ring, I've always closed them back up in the vice. If you get the pommel cube between the jaws of a vice, there's just enough clearance to get it closed up. I'd avoid using a hammer personally. Aluminium is just so soft. Wouldn't want you to have any unwanted accidents.No issues for me with the grub screw, and I just tapped the 8-32 one. Im having a bit of trouble getting my triangle ring completely closed though. Ive tried hammering it against wood but I dont want to go heavy and deform it.