Suburban oven in forest river

We have a 2012 flagstaff bumper pull .on television oven when we bake biscuits they get burned in the center where the burner is
We have a pizza Stone on the rack then the pan on that
Any suggestions?
Get a double wall baking sheet "bakers secret" that will fit on the bottom shelf of the oven, it will distribute the heat better. The trick is to separate the cooking pan from the heat diffuser. Been using one for years to cure the same problem.