get a digital temp and tape it on the inside where the uth is under so u can see what the temps are sometimes it gets up to 115 thats way to hot get this at home depot http://www.homedepot.com/webapp/wcs/...10000003+90401

and find out by moving it up lil by lil to find the right temp but u gotta check on it now and then its cheaper then buyin a thermostat but doesnt last forever