So I have been practicing increasingly on my Jaeger E. flat trumpet. Very happy with that but had noticed a problem that I think he is more related to myself than the trumpet. My daughter called it "making popcorn". Essentially spit is collecting past the first water slide and a third water slide and making a popping sound that can only be cleared by blowing hard on the horn so that the extra water comes out of the bell. Unfortunately, this makes a loud whistling noise and so I would never do it if playing a performance. This is a little concerning to me because I play the trumpet for church with some regularity. I do not know why this has started to happen. I am not having this problem on the Bb or the C trumpet.