Ok so I’m taking my wiper arms of , and they looked like there held on with a grub screw which wouldn’t undo. So I attempted to drill it out after drilling out attempted to pull arm off the collar with the grub screw which has been drilled out...
The spot weld are a lot bigger than rivot holes so I haven’t figured out which it’s the best way to do it , probably wait until the part I’ve ordered arrives & contemplate a plan