The list i mentioned, the link for it was found in this very thread, and is specific to Pakistan. I also found a Fedex list specifically for Pakistan which is:
https://crossborder.fedex.com/us/assets/prohibited-restricted/pakistan/index.shtml
Of course you are right that even if it isn't banned, the customs people can make their own rules and do whatever they want.
My question to you is that when I go to their office, and they give me trouble or threaten me in some way, what are my options? Can I just tell them to destroy or send back the item, and walk out?
What if they take some kind of legal proceedings against me? On the notice that they sent me (and I think this is just the general notice that everyone gets and is not specific to me), they say that any item left unclaimed for 20 days they can start legal proceedings under the customs act against the recipient.
Any advice or thoughts?