This was from the S3 thread and not sure why I didn't think of this instead of playing around with the freq's - but it worked. Got my unit I had to set at 212 freq to get 420 up to the 440's at the 218. Anyone with under performing units might try.
I reflashed both of my units, and so far, I cant really see a change. With underclock at 212.50 I was getting 420-430 gh/s and I put them back up to 218.75 and am getting 442 gh on each.
If you used the link above, you were pointed to the original firmware file...... not the new one.
EDIT: um... what happened to the new firmware file?