Just took my "expert" exam for work and passed with a 92. It's a 100 question exam with some crazy and random crap on it. I was a little confused on a couple questions I got wrong though, and maybe you guys could bring me some clarity? Seeing as you're the main reason I know too much about guitars! missed questions that made me scratch my head: First year of Silverface amps: I put 1968 as that was the first for tube amps. I wanted to put '66 as that was when the first solid states were introduced and had silverfaces, but that wasn't an option. First Year of Blackfaces: I thought 1963 but it wasn't an option so I put '65 as it was the closest? Fender switch from 4 bolt neck to three: 1971 right? Year Gibson reintroduced the singlecut: 1969? I just didn't know this one haha. Anyways, I feel pretty darn good that I knew as much as I did! Thanks for all the info guys!