i just got these tuners (heads or keys?) off ebay to put on my epi les pauls. the vendor listed them as tuners that fit "grover tuners." i look on my epi paul and they say grover. no problem right? well dang, they dont fit. in all fairness the vendor did list all the numerical measurements but i "assumed" fits grovers, meant fits grovers. the vendor avoided my specific questions, but informed me they only fit USA Grovers not MIC Grovers....ughhhh.....why the heck would they change diameters..... i am about to put them under the drill press, only thing holding me back is that they are real pretty. Any suggestions, other than that i need to learn how to use a ruler? i still want ivory(plastic) tuners on my epis?