Well, I don't know what to tell you. I do know tiny changes can have big impacts, so I'm not discounting your difficulty. Question is, is it worth it to you to make a minor change to improve your lot? A Warmoth neck is a wonderful thing.
In my experience, neck dimensions can always be absorbed. I can't tell you how many times I've had to do it over the last 40+ years. Move from a Gibson [whatever] to a PRS [whatever] to a G&L [whatever] etc., etc. It's always a bitch. But, if you're playing a lot, it's not a long-term hardship. Also, if you're you're playing a lot, it's even less of a hardship. If you know what you're doing, you simply adjust. The cramps will go away when your muscles get used to their new demands. It happens fairly fast if you play a lot.
I can remember times when I was pissed at a guitar and thought I needed something different, only to have somebody who'd spent a lot more time than I did on the instrument grab my guitar and make it sound like a dream. If I tried to play theirs, I was even more pissed. In other words, it wasn't the fiddle, it was me.