Whoa! Mark20, is anyone still making receptacles with paper (actually, fiber) backers on the mounting screws? The Big "L" (you know who I mean) standardized on plastic some years ago. Varying temp and humidity caused too many problems with the fiber stuff. And, OK, once in a while a changeover mechanic forgot to shut off the backer feed when the strap (yoke) had a grounding clip attached, but QA usually caught that. I apologize for getting just a wee tadd bit off topic.