Hi eq1 - no, I didn't check the blinking light subcode - in fact, that's the first I've heard of it!
Moving the sticks around would have no effect electrically - they're a series string.
It's
possible there might be differences in heating / cooling based on stick location in the pack which might affect cell health:
In my pack there appears to be a trend from best to worst discharge capacity based on row (on average, best at the top, worst at the bottom). But I wouldn't conclude this is a design fault without confirming with data from other peoples' packs.
So I didn't bother moving any sticks around. (I actually only pulled 3 or 4 sticks from the pack while analyzing them; the rest I left in the case).