So I've done a couple commutes this year (~11 mi each way) on a new-to-me bike. So far everything has been pretty good, with the exception of some cramping in my left palm. The right one feels finewith no other pain. I figure that something needs to be adjusted, but since it's only happening to one hand, I'm at a bit of a loss on where to start other than trial and error.

Just as a bit of history, I'm right handed and I've not had any injuries to that hand/wrist. I do work in IT so could be the start of some carpal tunnel but who knows.

Bike is a 25" '84 Cannondale ST500 Touring, I'm 6'7

Any ideas on where to start? I appreciate any ideas Thanks!