After months of searching I finally found an early 90's sunburst Epiphone Riviera to replace the one I let get away a few years ago. I bought a set of Kluson 3+3 Locking vintage keystone tuners to install on it. The bushings are a perfect fit. The hole mounting pattern lines up perfectly. The problem: the tuner post hole that the string is supposed to pass through is just barely visible above the top of the bushing. I can't get the strings through the holes!! The bushings are fully seated flush with the top of the headstock and I have the rear mounting screws snugged up so everything is tight. Anyone ever had this issue? It never occurred to me that the thickness of the headstock or post length could be an issue. I was more concerned with hole pattern and bushing diameter.