They do sometimes check things because a sniffer dog says there is something it when it's fine, basically a false positive. I had a box of DVD's checked once about a decade ago.
Anyway I haven't checked this thread in months. Is MP-36 ok to get through the mail without the required form? I'm thinking about putting an order in for the HK reissue since I'm looking at getting a refund on the one I ordered from they that shall not be named.