A: When I made my Mustang, the control area was really little and because the HB bridge PU and the singlecoil neck PU each needed their own concentric tone & volume control, and I needed the third hole in the plate for the selector switch, so I knew I'd need a side jack hole. I started with chisels (yes I know how) but that got boring pretty fast. So I "clamped" it in the drawer of my bedroom dresser, held it there with my hip and dug out the hole first with just drilling a bunch of little holes with a drill, then making some of them bigger (you could conceivably crack it that way - it's only 1 1/2" thick) - so I did some more chiseling on the parts of the hole that were top and bottom not the thinner sides, IYKWIM - but the real work was done with the sanding drum of the Dremel. It sounds kinda weird but I had my Gonzo on and it only took 45 minutes or so. If I do it again I'd probably take the shirts out of the dresser first cause it was kinda itchy for a week or two. But that kind of thing can start taking a long while if you lose your Gonzo overthinking it, so maybe not.
B) Deep panel jacks totally, and unquestionably, suck eggs. On real jacks, when they start getting loose you can just about always get through the night by sticking your finger in there and bending things back around a bit. But when the deep panel ones quit on you - and they always do - you got nothing. All you can do is stare in that little hole and cuss at it. Like that's going to work.
C) This was back in the good old days* when Warmoth would leave stuff off, like the stupid Mustang bridge spring gouged out holes but I think I remember reading that they won't anymore? Ask them to NOT do some extra work and they can't? :icon_scratch: Like why is whole wheat flour so much more expensive when it's white flour they have to do all the extra processing to?
D) Is part of your planning around a 24" neck because you do know that the !YaY! 24-fret, 24.75" scale, so-called "7/8" necks fit that body? YaY! If it isn't it should be.
*(he he well I remember back whn we used to... awsht, ifergit)