Sooo, I foolishly took in my 2 month old (1047 mi) trail hawk for the R01 Flash recall, even though I wasn't really experiencing any problems.
After the re-learn procedure they got a code 0402 - 'Bad air/fuel mixture, and could not resolve. Week #1 down. (I believe it might have limped back to dealer)
They replaced the TCM and PCM, and still got the code. Week #2 down.
So a new transmission is on order. That completes the third week.
I will move further postings to the forum on transmission replacement(s).....