5DIII Dust Reduction System

I love my 5dIII. But I did have a serious issue after a couple weeks. There was a huge bunch of crap showing in the right hand corner of pictures. I was on a photo seminar trip in Yosemite with Phil Hawkins. I asked him to blow the thing away. He did blow it, but still was there, moved a little. He opened it and there was a bunch of stuff there. Eventually he got tweezers and removed the stuff. He opined that it appeared that this stuff was in the camera after manufacture. Since Phil used the tweezers, I have had no more problems.