Is yours inside of a unit with doors? I have the same fan in the same spot on my 722, but it is out in the open and the fan running at full power would be too loud. I turn mine up just to the point I can hear it running, but I probably don't get the full benefit - my average is around 113.Full power!
Current numbers are:
High 125
Low 105
Avg 111
Wierd how its changed for the worse