The flavor of the week must be duplicate threads...
As I mentioned in the duplicate of this thread:
Freezers get hot on the outside walls. Plug in yours and let it run for maybe a half hour. A quick feel here / feel there will tell you where the important places to cool are. That's not to say the rest of the walls need no cooling, just that there are places that need extra attention. I'd put dedicate a computer fan to each major hot area. There are likely only one or two of them.