Rhodes - Stiff in winter, plays amazing when humid?

[vintagelove]

Hello, and thanks for taking the time to look at my question. I have a 73 Rhodes I bought last year in the summertime. The room it is in currently (and last summer) is fairly humid and warm (no AC, Upstate Ny), and it plays like gold. In the winter, it got a bit stiff and 2 keys were sticking (64 degrees, no humidity).

This is kind of the opposite of what you would expect, right?

What might cause the Rhodes to get stiff and keys to stick in the winter?




Thanks again.