i bought one of the regular 'stem' variety. first smoke, it choked. tossed it away. couldnt read it from the smoke stuck to the viewer part, and it was not moving off zero anyway. worst 14.99 i ever spent. then, i got one from meadow creek, for 30 bucks, works great!'
lesson learned. dont leave the stem variety in the meat, just stab it every so often(using an alcohol swab for sanitation, of course), which will kill the smoker, so that is a bad idea too. man, 'it aint rocket science, but it sure is close"