Usually this happens when I am in the mid-low register, (where my bottom lip is lowered and there's a larger aperture and volume of air) and whenever I have sustained playing (long tones, rochuts, almost anytime there aren't many rests) I notice the need to swallow, and/or this buildup and passthrough of saliva. As soon as 10-15 seconds into an etude this may happen.
Anyone else felt this or something similar? Tips?
I've heard this in my sound ever since switched I switched from my Holton 181 to my Shires - where I can hear a more distinct difference between my clear and less-than-clear tone. I assume nothing has changed in my playing to cause this. I've always felt that I salivate quite a bit while playing, and that I feel the need to swallow regularly, which can be bothersome.
I don't really know what I can or should do about it - the main complaint is that needing to swallow regularly disrupts breathing, which disrupts everything else

Thanks in advance folks!