If you saw an earlier post of mine, I posted that I got a new pocket trumpet. I've been playing it now as my main horn and uh oh, I have a problem. For some reason, after I'm playing for awhile it seems like spit gets stuck deep inside the horn somewhere. Blowing out the spit valves doesn't help. And so as I'm playing the notes crackle with the spit sound. I've tried removing the bottom caps, and sometimes there's quite a bit of spit in them. But I can't very well be taking the caps off every song. I think I recall French horn players having a similar issue. Any ideas?