Gary,

 

Drat!

 

You would think I would have figured that out when I got to the 2-2-2 weighing.  Oh well, at least I did the right thing with the rest of the stuff (the safety wire floss is working beautifully).

 

On the other hand, I had a no worse than .11 probability of succeeding (with certainty) in 2 or less weighings.  So there.

 

Grayhawk (slowly realizing I am missing some gray matter)