I finally gave in and bought myself a new guitar to go along with my 6506 head. I couldn't resist Saved up a shit load of money working 3 part time jobs and going to school and now it's already Christmas for me. Anywayz, I haven't found too much about Sperzel Tuners on this forum, so I was wondering if anyone has any experience installing them? I bought some directly from Sperzel in a custom 7-string set and I 've heard you have to drill holes in the head stock as well as the low B-string because it won't fit? Feedback appreciated!