Mail Khuks via USPS?

[HikingMano]

You might also want to clarify and report this to the postmaster of that office, i'm sure they care how usps employees are treating the general public.

Yes, I've been thinking about doing that. I might have to go higher than the local postmaster since all written policy (publicly available anyway) on shipping knives is vague; i can't completely blame the employee for not knowing the rules. I doubt one person making a suggestion will do anything though