Thanks for the string.
A little while back, I noticed a rocking on the driver side, but the passenger side felt tight, so I had the dealer check it out. They came back and said all the bolts were tight and everything was fine. My wife is the primary driver and she claimed not to feel anything so I figured it was fine (she's also quite a bit lighter than me). At this point I thought I was just imagining things. I drove it again last weekend and became really annoyed at the rocking and based on the info in the string, I took it back in. Much like a few others, the tracks are being replaced. Sounds like this will take care of it.
Although on some level, I suppose this helped me from driving too aggressively. When I hit the gas, the seat would roll back and I felt like my foot was pulling off the pedal.