I purchased a used Sportsman Hatcher last fall. It is a 1502 (non digital) model. I have been trying to regulate the temperature in it for the last few days and am having major troubles. I currently have it running with all 5 vent holes in back and 2 vent holes in side open and cannot get the temperature down from 104 degrees. Electronic thermostat is as low as it can go. I put a new thermostat wafer in last night. Doesn't change anything. I have tried unwiring the electronic thermostat and running just off the wafer thermostat, then I cannot get it higher then 85 degrees. Does anyone have any suggestions? I NEED it up and running for Friday!