Re: Reshaping a neck...
I’ve spent a bunch of time sanding a bunch of necks. It doesn’t take a whole lot of sanding to make a big difference in feel.
If it were mine, I would use an extremely sharp pocket knife held perpendicular to the neck to remove the finish. Either resharpen the knife periodically or have several. Then, I’d use a coarse enough grit paper to knock some or the edge off the V. Rather than worrying about C or V, I’d sand a little, feel it, sand some more, then repeat until I liked how it felt.
Yeah, if you go too far, you’ll ruin it, but I bet you can wind up with something that leaves the neck solid but feels way more comfortable. If it’s not something you’re reselling, I also wouldn’t worry about it being “perfect.” SRV and EVH both have famously asymmetrical necks, and I bet if you measure the necks both of those carves are based on, there’s a lot of inconsistency or the thickness.