I too have a Kenmore Dryer, series 80 model #110.76832500. Today it started taking a long time to dry our cloths. I checked the vent lines and they are clear and the air is blowing out fine. The air coming out is a little warm, but not much. I removed the cap at the bottom and looked inside at the igniter. When the dryer starts, I see it glow and then the flame come on. After about a minute it shuts off. After a few more minutes it comes back on for about a minute then shuts off again. I do not know how long this continues, as I did not wait the entire cycle watching. However, I noticed on one of the cycles to complete, 45 minutes, the dryer was completely cool and the flame was not on and the cloths were cool and damp. Do you know what I need to fix? Thanks.