RC Knight. That happened to me and about 10 other people at my track and most of us sanded and ca'ed the chassis including the countersunk holes.
And its not just the X-Ray chassis. It also happened to my friends brand new BMI Chassis. He was not happy. A word of advice lose the P-Dub bumper if you are running one. We all lost ours and no more problems.
The bumper is way too hard and puts way too much pressure on the nose of the chassis and screws.
As far as people thinking that every single X-ray now will come with a 2.0mm and a 3.0mm chassis. Think again. I got the inside scoop. This is only temporary as they actually ran out of 2.5mm chassis's. They are waiting to get more in. So they just threw both of them in there to make everybody happy. So get them while you can. Laterz...