I have just now found your message, and I really appreciate it. What an exciting thread that is!
Terk, thanks for settling the score of the unexchanged balance. I had figured that was just coins that had died but glad to see that there is progress to be made there. Perhaps it's less of an issue to me because my balance stuck unexchanged is literally just .002. So. Not too concerned about $0.90
Even though I dont have volt-modded Gridseeds, I have over-clocked them, and one of them gave 0 hardware errors at 950, so...it would do me well to be able to target individual units for specific clock speeds, or, as you suggest, use auto-tuning software.
Not only can you target individual units with a clock speed, you can target individual CHIPS within those units with a clock speed. If you run the autotune, you can get the results per chip from the API.
If you're comfortable mucking around with some basic PHP, here's a script that will, based on autotune results, give you a command line string to start up your miner with the per chip settings.
https://bitcointalk.org/index.php?topic=482352.msg6603449#msg6603449