If anyone is curious, I seem to have sorted out the issues. It was a combination of regulator and needing a good cleaning. I first tested the pressure at the fridge and the stove, and the pressure was 9.5-10. Close, but a touch low. I then installed the new regulator, and was getting a touch over 11. I fired up the fridge and though better, it still wouldn't get cold after about an hour. I then pulled all the gas-related components out of the fridge to clean, and though there was some crud it wasn't too bad. Apparently though, it was just dirty enough to restrict the gas enough to prevent a full flame. I fired it back up and the flame was noticeably better. 20 minutes later and the freezer was frozen. Not too bad for a couple hours of work and some running around locally to rig up the manometer and to get a new regulator (cheaper than Amazon, I might add).
