Hi bcullen

by your temps, it appears you either have cap tube blockage or have lost refrigerant

your lower temp pipe should have gone down in temp not up

but you have so little cooling, your compressor heat is being transfered to this pipe

the cap tube is the metering device that goes to the cooling coil (evaporator)

it can be fixed, either leak found and repaired or cap tube blown out with nitrogen or replaced

then regassed, but work will probaly exceed the cost of the freezer, unfortunatly

R's chillerman