I don't mean to suggest Dyna is having any inherent design problems. My comments are coming from the wider electronics market, where suppliers of the semiconductor parts and pieces seem to be undergoing radical changes because of our global economic issues.
In my own "little world", where I build control systems for automated machinery, custom circuit boards for customers and (of course) Transistorized Ignitions, I have seen a BIG jump in out-of-the-box failures in the last 2 years. These have all been component failures, i.e., semiconductor pieces like transistors and integrated circuits. There are only a handful of manufacturers of these parts in the world, most of which are on the Pacific Rim. It's the parts that are coming from the Chinese-owned or Chinese-influenced factories, who make semiconductors for many of the brands, that are showing these failures. More than 97% of the failed components I have found since 2008 are Chinese-made.
Since Dyna is, like everyone else, at the mercy of those vendors, I suspect there may be an invisible quality issue with some of their triggers, which is resulting in these failures. It literally can be as simple as a bad (unchanged, as in poor maintenance) air filter in a silicon processing compartment where the raw silicon is made that happens to end up in these parts. That's all it takes to affect hundreds of components further down their processes.
Dyna has always been pretty good about replacing triggers (and sometimes boxes) if they decide it's their problem. I don't think I've heard much complaint from anyone in that regard.
I personally just got tired of switching back to a points plate on the side of the road when my Dynas (that's plural) failed on a ride, which led to the gadget I now offer.