Freezer not cold enought and refrige not cold at all

I just recently replaced my defrost assemby which is very easy to do and the unit defrosted a few times then the condenser froze up again. I replaced the Heater/therm assy and it's been working well and defrosting properly now for a week. Hardest part of install is getting the plastic shroud off, you have to pull our and push down at some time, the back two clips are a bit of a pain but will eventually come down. After that it's a few screws and the unit falls out and is very simple to replace.