GFU16F7FW0 Gibson Freezer - Instructions

I first noticed my ice cream getting soft. Then 2 days later the alarm went. I emptied the freezer, opened the panels and saw no frost. I saw that 99% of issues were resolved with a defrost timer and thermostat so I ordered those. I have to say the parts came quickly and they went in very easy. My freezer seems to be in the 1% category though. It's still not cooling even though I can measure the temperature at the front of the evaporator coil is cold but by the end of the coil it's almost room temperature. I think a repairman is called for.