Congrats! you are getting to experience some good hunting. I had several 1100's through the years, all traded away now. My experience is once they start to wear out they will not function in the extreme cold. You probably already know this but run it dry, or use some of the new dry film lubes which are supposed to be good down to -40. I use the dry film now and works good for me but the coldest I have run it is 0. I would not wait on a new gun. Get it now while you are up there, and because your old gun is going to let you down again. To much hard work and effort to get out there and your gun does not work. Very frustrating and can turn a great memory hunt into a nightmare. I have been there!