CRG was correct. I did not warm my BE up before I used it. I've never used it before, so I just went by the directions that came with it. Next time I will warm it up first. It was also quite cool here in Minnesota when I did it. I don't remember the exact outdoor temp, but it was in the 30's. The wind was also blowing a lot. I had to move the whole unit during the process because the wind changed directions and I was trying to keep it out of the wind.