Opening an EWI 5000

Hello,
Some time ago, I noticed that my ewi reacted less well to my breath. So I redid a calibration and I noticed that the red dot which should light up normally around 60 would light up around 30. The instrument is no longer under warranty, I had decided to open the instrument to see what was going on inside. I had noticed that there was an accumulation of saliva in the small flexible tube which connects the mouth to the pressure sensor. So I cleaned the tube by blowing in and I reassembled everything and the eWi worked very well afterwards. Since I have a little time and I'm curious, I wanted to see if the phenomenon was happening again. So I reopen my ewi and this time there was really very very little saliva in the tube. However, I made a short video for those who want to see the inside of an ewi.
Good luck to all
Friendly