I have Burton Imperial's and Rome 390 Boss bindings as well.
One of my ratchets randomly stopped working last weekend. I'm guessing that the ice caused it to malfunction because it started working after my board/bindings were dry on the way home. I was extremely nervous about losing my board on the lift. Regardless, I am going to contact Rome and ask for new ratchets.
I just got off the phone with Rome regarding my binding issues, their warranty dept. is good and they stand behind their product.