Fast forward about a year or so, and there was an add or small article by Big Jim in Stunt News. It seems that people were purchasing the plans and building the airplane, and there were all sorts of problems, such as wings folding and other issues,
The folding wings were a combination of more power (and this more cornering), and what amounts to mistakes in finishing technique. They were covering the wings after the airplane was assembled, and ending the silkspan just short of the fuselage. That was OK when everyone was using St46s, you just couldn't generate that much cornering load. ST60s, and then, much more, piped 40s, corner *much* better and the loads went through the roof. Then there was a epidemic of structural failures. The proper technique is to cover the entire wing first, then put it in the fuselage, so you can cover it tip to tip, just like it shows on the Nobler plans.
I don't think this was a problem with the Patternmaster or even the BJ specifically, although as usual, when something went wrong, the fingers started getting pointed - that's just their culture. Plenty of other airplanes built the same way started failing, too, just without the minute-to-minute press coverage of "Pro Stunt News" in the alligator-sticker era.
Ted Fancher pointed out the problem at the time; predictably, they ignored him, and then came up with the big elliptical fiberglass patches, sometimes two of them, to make up for the lack of covering through the fuselage. That was even *before* they started the "fued"
(sic) Brett