My Whitfield Profile 30 is about 20 years old. It seems to be working okay but it takes a few tries to start, going into default sometimes. I know the photo eye controls when the pellets feed. Could the photo eye be going bad or do they either work or not work? I cleaned it when I did my annual clean. The wind has been blowing quite a bit lately so that may have something to do with it starting but wanted to cover all bases.