Whenever I empty the spit out of the spit valves, barely anything comes out. So, one day I decided to take out the tuning slide and just blow straight out of the lead pipe, and tons of spit came out. Is this a bad thing? And is there any way that I can get the spit to start coming out of the spit valve for once? (Ever since this started happening, you can hear the spit when I play, and I can't get rid of it.) Thanks!