Almost forgot, I would also agree that Maxline, the small and sole U.S. Eagnas importer, is run by an eccentric individual who is short on patience. I didn't have any problems, but its probably wise to be polite, tread lightly and pay with a credit card. There are laws that govern the sale of goods (specifically, Article 2 of the Uniform Commercial Code, as adopted by CA), but they can be a hassle and are not particularly consumer friendly. By contrast, the credit card dispute process is simple, powerful and easy to navigate.
Also, only because I noticed it, I'll point out that Eagnas claims on it's website to hold U.S. patent No. 4,706,695 for it's self-centering mounts. The U.S. Patent and Trademark Office (USPTO), however, lists no such patent for Eagnas or Maxline. In fact, if you search the USPTO's website at http://patft.uspto.gov/netahtml/PTO/search-bool.html
, you'll see that neither Eagnas or Maxline hold any U.S. patents.