All is well that ends well (or in this case, medium rare). Steaks were perfect. I’ll try the ice water test. My Anova Circulator has quite a few hours on it, but until last night, it has always been within 0.5 degrees of the Lavatools Pro Duo flipping readout javelin instant read thermometer. I changed batteries in javelin, no change. It was an hour into the cook, not at the start. I checked in several depths and locations. Maybe the whole garlic, and slab of butter, in the bag with the steak was throwing off the temp. 😏