So, I am trying to modify an Encore Ratchet, and I need to take the arms off with their shoulder hinge attached. The problem is, OLD Ratchets used to be screwed into the shoulder base. These new ones have rivets instead. The other problem is, the rivets go into metal, and there's no hole on the other side. I need to keep the sockets intact. The soldering gun heatup method does not work. Will I have to drill these out? Should I use a rotary tool for this job? If anyone has any tips on this particular extraction, or what rotary bits to use, etc. I would be grateful.