Can someone please help me with my temps. I have a Herpstat 1 set up with my 2 shelf 41qt rack. The Herpstat is set for 93.5*, to get my ideal Hotspot inside the tubs. I have tried relocating the probe to both the top and bottom heat tapes. My top tape currently is 97* at the hottest spot, my bottom tape is at 99* degrees. The top tape will vary 8* to 10* less than the bottom tape. Did I set something up wrong? Bad heat tape? Bad probe?

Thanks,

Steve