@Peter-Ostry How interesting. Thank you both the the info and the insight.
I am on the road now, so all modifications (like obtaining Hot Glue, which I have never used) are more difficult.
I believe that the O-Ring on my black mounthpiece does not make a perfect seal, since there is a very slight wobble in my mouthpiece when it is fully seated. Not a problem playing, but maybe there is a slight moist air leak back up underneath the blue ring.
I am not sure what the air-path is that you are describing here:
the inner gap between the housing and the blue ring.
... maybe it is outside air? Or is it some breath moisture air?
with your fan without a mouthpiece,
I am not currently using a fan while on the road.
At home, I store my Sylphyo vertically in a 3-D printed stand (https://community.aodyo.com/topic/606/floor-stand/7). I do use a fan to pull air down the Sylphyo. This seems to work well ....
On the road, I am using a cradle (https://community.aodyo.com/topic/606/floor-stand/5) that stores the Sylphyo horizontally, and I am not using a fan. I think this is not a good idea. I have been having more and more issues, which I suspect are related to moisture. Failing to send MIDI when paired with the Link, Unable to initiate a pairing from the Sylphyo, and even failing to send send MIDI over the USB connection.
I am still laying it down horizontally while at gigs, but overnight I am now standing my Sylphyo up on end and leaving it open to dry (and removing the blue ring). This is a bit risky (it is just standing on its bell end) but the behavior of the Sylphyo is improving.
Since I have no experience with Hot Glue, I have many concerns with attempting to seal the active mouthpiece port.
- Will I melt the plastic of the body of the Sylphyo?
- Will I drip glue into the active mouthpiece port and into the Zone of Electronics?
- Will some undreamt-of calamity befall my Syphyo in my fledgling attempts at Hot Glue Art and I'll be left playing a kazoo at gigs.
Maybe there is a tape of some sort that would stick, provide a seal, and be safe?