What's wrong with my oven?

Check the oven temp after half hour. Mine was grossly out of spec. 100 degrees lower than the setting on thermostat. The Attwood guy tried to calibrate it without success. He then replaced the oven control.

preheat

First you need to get a good oven thermometer and measure the temp in your oven. Run the oven for about an 1/2 hour and look at the thermometer. If you set it for 350° does the thermometer show 350 or higher temperature.

Our oven is 25° hotter than the setting so we have learned to live with it. Instead of 350 we set it at 325 when we use the oven. Most of the time we use a countertop convection oven for convenience.

An adjustment can be made to reset the oven so that it maintains a near correct temperature. You'll need to look at the owners manual to find the adjustment.

In addition to the fire bricks, my wife used parchment paper to prevent burned biscuits.

RV ovens are notorious for having uneven and fluctuating temperatures. One simple solution is to place a pizza stone on the bottom shelf. The pizza stone retains heat and acts to stabalize oven tempuratures.

EDIT Sorry for the simultanious post.

Get two or three fire bricks , an unglazed floor tile or a pizza stone. Place that on top of the flame deflector. Then cook away. Most of us have found two problems. One is the uneven heating in an RV oven is cured with mass. Hense the fire bricks. The other problem is the small size of the oven people tend to croud it or place things too far down near the flame.