Vortech Failure

[Madreefer]

Anyone have a dry side fail on one of these units. I put a post up a while back about the noise mine was making from new. The noise has now got alot louder. It is under warranty and I am getting a new part sent to me but the noise is really ****in me off and I see there is a screw on the inner part of the dry side. Has anyone adjusted it at all? Dont want to do so unless someone else has tried with some sort of success.