I've searched through the forums already, and it seems that people have either used Hipshot HB2 or Schaller BMFLC tuners as replacements for the machines on the Geddy. Also, some variety of Hipshot ultralights. A couple of questions for those who have done this... 1. Are the correct tuners a CBS/Kluson style? 2. Are these DIRECT replacements (drop right in)? I don't care to drill holes, etc. Just turn screws. 3. Best place to get them? Direct from Hipshot, $88 for the HB2, Schaller $95 @ allparts.com 4. Did you notice a difference after the change? I mean more than just "it looked cool" or whatever, but an actual difference in tuning ability/stability?