Kit #1: 3 cards:
1: 30.609GH/s
9: 31.339GH/s
13: 29.335GH/s
Kit#2: 2 cards:
Bank 1
1: 30.723GH/s
9: 30.093GH/s
i penciled the resistor to about 1230ohms.
Should I have done that or go lower?
I was able to do 1.18k Ohm... I've been steady at around 33Gh/s.
I tuned down to 1.165k, getting around 35Ghash, and 33Ghash/noncerate at the pool. Amazingly, chip #13 which was running at ~300mhash with tons of errors now works just fine.
I had a similar issue with one chip on an h-card. When I changed the resistance to 1.2k the chip went from ~0.100 to 2.000. That said I did need to clock it lower than the rest of the chips to achieve a reasonable error rate. At 53 it throws about 4% errors.