If your genset works, or if you have extra solar panels on the roof, yeah, replace the Norcold. It is a ticking timebomb. Their 'fixes' don't really 'fix' anything as it's a design flaw of the coils, not an overheating issue. That's why there's still an active multi million dollar class action suit in court.
Two days boondocking is easily accommodated with judicious opening of the refer door, and a couple hours per day running the genset. Longer periods can be handled with bags of ice in the refer and quickly pulling out meals from the freezer.
At a RV park, no problem of course since you're plugged in.