Was it Built on a Monday or a Friday.......
I suppose that guitars as well as cars can have lemons, built with pride and a heavy hangover. Plus, you never what those musician types are smokin'.
Anyway, when the man said "fell apart" I think he meant warped badly. My Ovation 12 string started to crack along the soundboard braces, but I never found out if it was just the finish or it went deeper into the wood.
Anyway, I'm still amazed that you've never heard of tuning 12 strings down. (Just as much as you're amazed that I have). It is in every instruction booklet I've ever seen. Granted that the 3 or 4 step down is too extreme, but 2 is nice, and when you capo up two, you get the added benefit of the capo reducing the overall action height. Well, there is a drawback, when you capo up, you run out of neck on the high end real quick. And if you capo on an odd key, the position markers, are out of sync. So, for people such as myself, who are "tonally challenged", you lose the ability to "play by eye".
I'm hard core lefthanded, so it's difficult for me to find guitars "off the rack" as it were. Right now I have an Epiphone Acoustic 12 string that I found in CC Philly at Eight Street Music. Once upon a time, there was the "Left Handed Guitar Store",, but I think they've been under for years. I'm suffering from "Googleus Interruptus" at the moment. or I'd tell you for sure. (Not down, just lazy).
IMHO, the trouble with many acoustics is that the luthiers set the neck directly in a straight line with the sound board, wheras I believe it should be set at a slight angle, with the headstock dropping slightly toward the bottom of the guitar. This then requires a higher initial bridge setting, and as the axe settles in, (read the strings pull the neck upward), you still have plenty of room to drop the bridge and set a nice action height. I've just seen too many of them with the string riser buried deep into the bridge proper to think otherwise.
As I frequently state, "your results may vary", and good luck luck with all your "babies".