How do we maintain Rottefella cross country ski bindings so they will not freeze up and make operation impossible? We took the skies inside and thawed them out until they were dry. What next? How do we keep it from happening again.

Get a spray can of 100% silicone spray and use it often.

I've had the same problem from time to time. I've used Tri-Flow bicycle chain lube on the toe mechanism with spotty results, then tried Lock-Thaw last season at a friend's suggestion and that seemed to do the trick. This is the stuff that you squirt into your frozen door locks to thaw them out. I squirted the toe piece of my NNN BC whenever we took our skis off and it worked. I think the key is to do it every time you take the skis off. The stuff is cheap and is handy to have when you get to your car and find your Yakima box lock frozen. Worth a shot (or a squirt).Good luck.(Paul added:)In general I like these bindings, but I have also had this problem with the bindings freezing and becoming very difficult to re-enter. I have dealt with it by using my breath to warm the binding area until the ice melts, and then blowing away the melted water as much as possible (to prevent quick refreezing). This is much easier than trying to bash out the ice (unless you have a good tool, perhaps).It also helps to use the ski pole to open the binding as I step in. I'll have to try the alcohol spray (Lock-Thaw)... but it's another thing to carry and/or lose at the wrong time.I think I would go for the "Magnum" version next time, with a more reliable manual operation, since it can be dangerous to be stuck in the backcountry without being able to get your skis on.