Do I ever! That would be fantastic.
I basically have some NOS shells and some pretty beat up old shells with very good condition axle+cones. Not sure if they are the right size so something to compare them to would be good. Then the ability to set both up would be even better!
More than happy to buy them from you. Be great to even just have a point to start experimenting from to see what works. Not sure how you tell what size bearings cones are for though, I presume it matters. Either way I'd be happy to go buy whatever you have.
Or anything you need? If I do we could swap.
I've got a bunch of stuff lying around, but mainly for projects, sadly been having to sell nearly everything that isn't at least 90% earmarked to be used!