MooreBoost

Sorry for another question like this, I searched, but none pertained to this bov. Its the TurboXS Type-S. Mine is fluttering, I have it connected to its own vacuum source, and I cannot hear the BOV when I rev in idle, even to redline. This leads me to believe there is too much tension on it, and its not opening/closing easily enough. There is a nut on top of the BOV that the vacuum nipple is attached to, should I adjust that to the left? Or is it something else all together? Thanks.