Hi everyone. Haven't posted in a long time - good to be back! OK so here's the thing - I have a 4-string Zon Sonus Custom, and I was thinking of replacing all 4 stock tuners with Hipshot Ultralight Xtenders plus Double Stop levers on all 4 Xtenders. I know Michael Manring has or has used that setup on his Hyperbass and that there was a definable bridge that he used that has since been discontinued. When I first purchased the custom, I remember something on Zon's website / order form which had a checkbox next to the option of adding a detuner. I cant recall if it was just a single one, and at the time I had no use for them. I don't have any problem with the bridge; I dont need that to be detunable so if I can do this whilst keeping stock bridge, that's fine. I need to know as much as I can about this before taking the plunge (they're quite expensive, as least for me they are). If this is at all possible in the first place, would I have to physically modify the headstock (tuning peg holes or some other thing) or would it be more of a "drop in" situation, perhaps with minor tweaks being mandatory but as a task, easily manageable for someone like me, who can't do the more "complex" stuff like say, changing all the pickps and electronics (I'm learning though, albeit at a slow pace) Also as important - Let's say they can be installed. Will they work well, as intended? Will there be problems like a change in the feel/sustain, things of that nature? This is important because the way my Zon is setup, plus the bass itself, is hands down the most comfortable bass to play, the way I play. In regards to the Hipshot Extenders, I don't know exactly which Xtender model would be the one to use; again, should this be possible, so that's another thing I need to know. Personally, I've only experienced a single hipshot detuner on the E string of a friends' bass - a Yamaha I think, also a 4-string bass. and That Hipshot was probably an older (discontinued?) model - I'm really not sure - however identical in regards to what it did, and what the new ones do, minus the Double Stop option which I don't remember that particular detuner having. I don't think it was an Ultralite model. This was sometime in 1998/1999. Apologies for the long post; my technical vocabulary is quite limited so this is my best attempt at trying to describe this task. If anyone has experience with this, or just anyone who has any information in regards to this, anything would be greatly appreciated. Thanks!