Found lots of diagrams on the Internet for poor, better and best rv frig installations. Mine could be a poster boy for a poor setup. Way too much air space between wall and condenser, upper vent too low, fan too far below condenser, underside of countertop traps heat...
Anyway, now I have several ideas to improve its performance. Not really any fault of the Dometic frig. Makes me wonder if Jayco designers ever read the installation specs for the appliances they draw into the plans.