Hey All
I found this guy over on the Litecoin forums if you are struggling to get your GPU's tuned up. He's very reasonable ($7.50 USD per GPU) and knows his stuff. I used him to tune my scrypt because I've just started, and was getting frustrated trying to stumble around by myself. For 15 bucks he got me up from 630 k/h to 740 in no time.
If you're having trouble and just want to get up and going I highly recommend him.
https://litecointalk.org/index.php?topic=8007.0