Had nearly the same happen to me. A while back, I was sending a fellow MW member a screwcap from a 1/60 VF-1 at my then-local PO. When I came back out of the PO, a traffic officer was writing up my car. Seems to me that the city had quite a racket going, you have 15 minute parking zones everywhere within 4 blocks of the PO, and as everyone knows, it is impossible to get in and out of the PO in anything less than 45 minutes... Ended up with a $60.00 ticket, all to send a friggin 1/60 screwcap. Had I been another few minutes, the would have likely towed my car...