Dan, the Morgan Three Wheeler Club (MTWC) magazine comes with membership in the club. All members receive the magazine. It is just now starting to include 5 speeder information. The limited amount now is simply a reflection of what the members submit and I suspect that there are only just a few 5 speeder members. Remember that this club has been around for decades longer than the M3W has been available. So it will take them time to get fully engaged, but I have already seen a increase in articles.
Mark
1934 SS MX4 1938 Series 1 DHC 1951 Plus 4 2005 Roadster