If you are having problems with liquid in your mouth with
your 901, pull the end off (stick something in the small hole and pry)and put a small piece of paper towel inside and replace the end. Use a very small amount, not enough to restrict air flow.
Replace as needed.

your 901, pull the end off (stick something in the small hole and pry)and put a small piece of paper towel inside and replace the end. Use a very small amount, not enough to restrict air flow.
Replace as needed.
