dometic refrigerator not staying cold

Thanks all for the help. Here's an update. The rear baffle has about 1/16" gap all the way around it and is even with the back of the fridge, so it makes a fairly smooth continuation of the wall all the way up to the vent. The door seal actually seal with a little persuasion on the bottom corner creating a pretty good seal all the way around. I have put 7" insulation on top of the unit in the dead space. The fan is creating airflow proven by drawing smoke from outside of the louvers and exiting out the roof vent. Ambient air temps have been in the mid to upper 70's all week, going down to 50's at night. I added the insulation and pushed the door shut tight about 2 hrs ago and already it has dropped 2 degrees and there is a noticeable difference in the temp of the pipe near the top of the fridge. Will post back updated temps tomorrow morning and afternoon, forecast to be near 80 tomorrow with chance of storms. Right now is 76° and inside temp is 58°. Also I have no fluorescent lights anywhere, all incandescent 12v lighting.