just to throw this out to you
the fridge only gets warm while you drive and use lp?
or does it also get warm if you drive and it is on a/c power?
my unit will periodically blow out if i run it gas and drive, which sets a code
your temps on #7 and 70 F outside IMO is crap, it should be much colder
i run at 7 and get 27-29f in the food box
and 0-5 in both freezers
i will also add if you move the thermistor that is on the first fridge alum coil to the 8th or 10 th fin....it will cause a better cooling
also do a soft reset of the fridge
kill 12 volt and 120 power for ten minutes and open the doors
then restart and clear all codes (this may take several times to clear)
then set it on 7 or 8 and keep it shut for 24 hrs
then measure the temps in the food box and the freezers
set it on lp and do another 24 hr test
if the flame is good and clean, it can still be blown out while driving....
I would also remove the cover on the roof vent and get a GOOD visual down the opening for anything that does not belong
if it worked great before...then unless its clogged up in a tube or leaked the ammonia ( which you would see or notice)
if you haven't downloaded the norcold book....you need to
its a very good read and makes up for norcolds subpar customer service
the above link has almost all of the manuals