I'm just in the process of replacing the pickups in my Samick Greg Bennett Royale 3 semi-acoustic. It's probably about 20 years old). First time I have tried this, so I thought I was doing pretty well getting the new wiring harness back through the f hole. Then I got stuck - I could not move the new bridge volume pot anywhere near enough to its hole in the top. I managed to find my little inspection mirror, and with a torch taped to direct light inside the body, I soon spotted the problem. The wire from the bridge pickup was snagged on a strip of metal sticking out from the junction of the side and top of the body?! What th...? Fortunately I managed to release the pickup wire and push the offending metal strip out of the way. I finished the wiring installation last night, and on testing (with just a single string for now) both volume pots and tone pots work as expected - and no sign of any grounding issues. Phew! But what is this metal strip? Obviously installed (it's fixed with a blob of glue) by the builders in Korea, but I can't think what its purpose is - it does not appear to have been connected to anything in a circuit. Size is difficult to judge, but for reference, that is a CTS mini pot next to it, about 15 mm (5/16") across , Any ideas/theories would be welcomed.