OHHHHH finally i get it..... basically the 'nut' on the plate is loose and can spin freely?
if you use glue/nail polish takut takut when wana take out, shit happens and it gets stuck
why not try soldering it in place?
unable to weld also because the nut is steel and the plate are aluminiumif its important..very2 important...just bring it to the welding shop which has an ac/dc tig welding machine, since it is aluminium rite?
When need to tighten supah glue won't hold......supah glue....