I've searched, schemed, and done the math. I don't think it's possible. I now go to the collective knowledge trust of Talkbass. Can I swap out my jaguar body with a lighter one and have an 8.5 lbs. non-neck diving P-Bass. I have a VM Jag 5 that comes in at 10.5 lbs. (bathroom scale). It's the 5 string version and it just feels very chooch-like and cumbersome to play. Love the tone, but not the weight! Want to keep the VM Jag V slim C neck. Assume I'm willing to go with Hipshot ultralights to make the neck as light as possible. Will be a single split-coil p bass pickup, (1) vol. (1) tone. FWIW I've tried the wide strap, I've tried varying my playing position, all the shenanigans that are pretty abundant if you use the search function. After about 40 minutes of playing with this bad boy I end up with sore spot mid-lower back plucking hand side. It seems to be showing up more quickly now, so trying to be ahead of the game. What I would like to do is replace the body with something lighter, but i'm afraid that even if I nab a Warmoth unpainted, 3 lbs 10 oz extra light swamp ash body, the bass will load up to the exact same difference once you add tuners, pickups, etc. And, there is the ever present fear of the dreaded neck dive. So, I'm throwing down the gauntlet of challenge. Is it possible to do a body replacement and come out on the mark, or am I just stuck with a heavyweight?