Reply to Traktor 2.5.1 fader issue

Hey all - I didn't upgrade to 2.5.1 until this past week and it was acting very glitchy over the weekend. I'm working with a MBP and an S4. The most notable glitch was some dramatic ghost fader drifting. In other words, while Deck B was playing, and I had the fader for Deck A all the way down on the S4, the Deck A fader in Traktor would drift up all by itself. Has anyone else experienced this? Did a quick search and didn't come up with anything. Any help is appreciated.