Oh, K3 uses shitty snaps to hold the case together, you can just pop it into place (apply some pressure), there are 3 on each side, slight pressure should do it - that will solve that problem. The panel actually comes off really easily. Perhaps the back casing is not on enough to hold the bevel to the front, not sure, don't have K3, make sure that is the case. USPS bashes stuff around hard.
http://www.youtube.com/watch?v=lD-wP...layer_embedded
This was posted earlier, he shows you where the snaps are, mabye this will fix the 1 problem you have.