As a final update to this series, it looks like my GT1080 made it through the winter unscathed! I did have a couple more times when the fan froze solid and I needed to wait for the room to warm up a bit more before I was able to golf, but other than that and some condensation causing a dim image until the projector warmed up on cold starts, I didn't have any issues and we've made it to spring time with a functioning projector.
Thanks,
Bob
Thanks,
Bob