Thank you for your help, but I'm pretty sure the vent is clear as can be, we cleaned the lint out of everything, then put a new vent on the dryer that runs about 7 feet outside. There is strong air flow outside when it's running, and just to be positive we have tried running it open into the basement to see if that made a difference and it still did not get hot after 15 min running. I can hear the gas click on and can see the igniter glow and a flame come on, it just didn't seem to get very hot, it took two cycles on the cotton option to dry 4 towels, and even after that double run they were still damp. Do you know what kind of temp we should be getting? I can try putting a thermometer in there. Once again thanks for any ideas you have!