Hey all.  Does anyone have "the perfect" working config for this miner software for 270x cards mining scrypt-n?  There seems to be a lot of how to guides out there but nothing seems to help and there is a lot of unorganized info out there (no config wiki like the Litecoin page).  I have tested and tested with different configs and I cant seem to get a very good hashrate or if I do, I start to see hardware errors.  And to boot,  I built a second rig (same exact drivers and cards) and it gives me a totally different hashrate than my older miner.  

Here is my config, any help would be appreciated  (This gives me around 212khs and some HW errors and WU ~90-95% -----my goal....higher hashrate with 0 HW and 90% or higher WU):

"gpu-engine" : "1045",
"gpu-memclock" : "1500",
"intensity" : "18",
"worksize" : "256",
"lookup-gap" : "2",
"thread-concurrency" : "12288",
"temp-cutoff" : "90",
"expiry" : "30",
"log" : "5",
"queue" : "0",
"scan-time" : "1",
"device" : "0,1",
"scrypt-vert" : true,


EDIT:  I am also undervolted to 1106.