Glad i could help. I struggled with this very same thing not too long ago. There is a nice spot right were the upper and lower ridges of the roof of the mouth curve together that the tongue can rest comfortably, after a little bit of getting used to it. If you are salivating more, then you know you got the right spot. Wait till you get enough saliva filled up and gently swallow it. The increase in saliva production is a biproduct of the circuit being connected properly

Ed