I've had mine for about 2 months now and it's a great PAIN in the ASS or head....when I first noticed it, I thought that it was a fan that needed oil .....I checked around and couldn't find the cause of the "squeaking" I looked for days...turning off the a/c and equip in the restaurant looking for this squeaking sound...
I finally turned off the main power and then I realize that the damed squeaking kept fallowing me around, then I knew it wasn't in the equip, it was in my head.....went to the doc and he said that diet will help greatly..
and to lose the COFFEE ....I started a similar thread on smallgig.com and now know that quite a few of us in this business have it...IT AIN'T GOIN AWAY, IT'S HERE TO STAY.
TR http://www.smallgig.com/forums/showthread.php?t=521