worked it out! couldn’t delete this post. . . .
I’d e-mail Amos at M00gmUsic.c0m, as this to me sounds like a potentiometer going south. 
Moog makes high quality products. The LP is mostly Chinese, but for the most part, is a high quality product. They’ve built over 5000 Little Phattys and I’ve only heard a couple stories similar to yours, so I imagine that this is a relatively rare problem. Best of luck to you.