When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Yep, it's your sensor. It's set to factory specs and the sensor has drifted slightly over time. I'll pm you and ask you a few Q's so you can get it set just to make sure it was not shaken off dead zero during shipping.
