Have you tried using motorcycle gloves or something along those lines? I think those gloves tend to be a bit more rugged and may be what you're looking for.
If that doesn't seem to help you significantly, I'd head on out and see your doctor asap- it could be carpel tunnel syndrome from 25 years of overuse (ok, it's not overuse to us, but it's repetitive use, so same-same), and maybe they can recommend a treatment that can help you out.
Koffee