Hello there, I´m planning to tune down my explorer from E standard 10-46 gauge) to C or B with a new set of strings (10-60 seven string set; I´ll remove the first string so it will be 13-60). I´ve don this several times with some other guitars, but they were bolt on, and this time is different so my concern is about how much can affect the change of tension on the neck joint of Gibsons and set in necks in general. I don´t want to adjust the truss rod, is just to change the string gauge and see how it sounds. If I´m happy with the sound I´ll take it to a professinal luthier for a professional set up. Thanks.