zal, in principle yes, but I expect it to be very small. The tube is a bit bigger than the tube ID and the the wall thickness is only about 1mm so its not very significant. Dont forget there are small ridges anyway where the tube connects to the TB. I would like to replace this assembly with a better tube that fits correctly and is not so soft. Waiting to see if
IPD come up with something better.
Anyway the
Plenum is not that perfect. At the junction point inside there are 2 holes and a cutaway, presumably from the mold tool. Ideally they should not be there.