When I really concentrate and pay attention (ahem) to what I’m doing, I can hit it right every time. You are right, though, it seemed to happen more upon tonguing than upon slurring. It’s an air supply, throat opening issue. If I think about it before I play it, I can hit it right every time. It was just in the middle of a song (kinda fast, tongued) that I was having the problem. The note before it was higher (B), and I think on my sax I have to open my throat more going down. Make sense? I just have to practice is repeatedly, as you mentioned. Thanks.