On the grounds that I have spent A LOT of time on the Z forums, especially my regional ones. I am very in tune with the local Z owners in the Bay Area norcal region and know some in socal. The Amuse kit is one of the rarer kits that not many choose, one of the main reasons I got it. I know people who are in Socal and after being part of the community for awhile you got sense of where people who have the same kit of you are after multiple PMs and discussions.