GAS BURN IS SUTTOFF VALVE TO FAST HOT NOT ENOUGHT
Answer Tran, I'm not too sure, but I think you're describing a too hot and a short burner cycle. Which would indicate a clogged dryer exhaust vent.
Before you replace anything, check and clean the lint filter and housing, disconnect the dryer exhaust vent from the back of the dryer, and dry an average sized load, it should take 40 to 60 minutes on average. If that's the case, you'll need to clean the dryer exhaust duct in the wall. Thanks and Good Luck.