I get an extreme amount of frost on the ref. side (the back coil) and the ice maker freezes up (including the water reservoir). I then have to turn the unit off and defrost it completely. This is constantly recurring over a 1 - 2 month period. I have the temp. set at 37 degrees. I just recently went through the self cleaning cycle using the u-line Ice Machine Cleaner. Any help would on how to fix this would be appreciated.