To help improve heat ditribution try putting a pizza stone on the bottom of the oven above the burner. Also be sure to pre heat for about half an hour. Still far from perfect but it does help quite a bit. Doing this maks it a little better, constant checking keeps dropping temps which aids in the uneven cooking. That said it still has to happen.. I check about 15 min intervals if it something that cooks long like a pot pie. For cookies I spin the cookie sheet about half way throuugh.