I have a whirlpool accubake range, and have been having problems with the oven not keeping temp during baking. It seems to be worse above 400 degrees. when I set the baking temp and start the baking cycle it always lights and comes to set temp. but during baking it may or may not relight when it calls for more heat. they have already changed the ignitor and wire harness to the ignitor but still have sane problem. to me it doesn't seem like that type of problem because when it calls for heat you can hear the ignitor cliking and you hear a swoosh sound like the gas ignites but then it doesn't come to temp. it's almost like there is a flame blowout. you then have to restart the oven by canceling and reset temp and restart. then keep an eye on it incase it happens again. any suggestions would be appreciated. I did read about having to drill out the holes in the burner one size?