They are x-raying a lot yes, not everything but a lot more than they ever used too which is why shipping times are all over the place and seizure rates are up significantly. I know people whose success rates have plummeted in the last 4 months, these are buyers with over $100k spent and a 0% refund rate I might add so they know what they are doing. As for what you can do to counter it well I'm still considering that myself but just making something non permeable with MBB is no longer enough, I am just hoping they run out of money soon as they cannot keep this up indefinitely, they are also due for a funding cut which ironically might be the driving force behind their extra efforts so they can go "hey look at all these drugs in the mail, if you cut our funding the sky will fall in". I am sure there are some experts in spectroscopy who could advise on methods to beat the scanners, it is however not a subject I am qualified to offer an opinion on.