OK Have had delivered 3rd replacement kenmore gas dryer. We push start with load in and some times it runs full cycle some times it shuts off. No rhyme or reason. some times 2 min, some times 10 min, 3, 8, 1 no reason. We tried 30 min no sensor, 60 min no sensor still stops or clothes are not completely dry. we do hear gas cycle on and off, and it does get hot in drum when it runs long enough. We are running out of solutions. please help

scott