Sorry we will not.
Re-radiusing can be troublesome and we don’t do it. If you examine the radius of a given neck like a 9.5, when you flatten say for a 12″ radius there is a good probability of sanding the position markers off. You can overlay two arcs in a CAD program to determine the amount that will be removed. But real world never is the same as design measurements. Anyway markers are only .050 thick to begin with before the initial factory radius then they end up around .030. Once you start sanding you may go right through them. It can be fixed by installing new markers but the cost of the whole process can exceed the cost of a new neck from Warmoth and others. .Fret board thickness, side markers, finishing are other items to be addressed also. Sometimes it is successful but it’s not worth the gamble or trouble for us and not worth the money for the customer if issues arise.
Compound radius done properly requires a machine to do it. We have such a machine and use it for our own 10-16 radius necks but will not use it on a customer neck because if anything goes wrong or setup is incorrect for some reason it will destroy the neck. A compound radius done by hand is at best only an approximation of what a compound should be. So if your friend or local luthier tells you he can do it with a couple of sanding blocks, it’s up to you.
I always advise customers to just buy another neck with the desired radius. It will only cost a little more and will be what it should be. Sell the other neck to recover some cost if need be,.
We used to make necks but have become so busy with refrets we are focusing on that for the time being. Point being we have a lot of background and experience in neck design and construction.