Funny that you mentioned that, it is actually what I did in the morning. I didn't have any dressing at the moment, but for the time being I used a bit of good ol' WD-40 and that seem to quiet the belt. I think the "paper" sound I'm here is the large TB, it doesn't seem t be present at higher RPM, so I'm assuming that is when the butterfly valve is fully open.
Since it seems to occur under low RPM, I think the butterfly valve opening in conjunction to the larger 70mm body is causing a difference in sound or a slight warping sound, but nothing usual. Perhaps I didn't notice it prior. Thanks for the help thus far, I think that would make sense as to the sound that I hear.