I saw a post on here recently referring to using a shim cut from an aluminum beer can to take up the slack in hinge pin/hook junction. Seemed like a good idea so I cut one, put it on the hinge pin/hook junction on my NID and it works great. Then I remembered a post from a while ago which mentioned a nightmare scenario where aluminum snap caps were chemically "welded" in place! I think we've got some chemists/engineers and other technical expertise on this site, whats everyones opinion, should I pull the aluminum shim ASAP or is it a non-issue. Thanks in advance. John C.
