My Power Vision ET reading on my 2017 TG is considerably higher than it was on my 2016 Freewheeler...about 35 degrees. The FW was equipped with Wards fans and the TG has Mighty Mites. (This is not a comment about the fans.) I'm wondering if the ET sensor is located differently on the M8 vs the 103 and thereby giving a different reading. Thank you for your comments.