I did the 49.9k resistor mod, but I'm having an issue:

http://i.imgur.com/fXkhIQq.png

For some reason, although the Gridseeds are running at 7.65 Mh/s collectively, I"m only getting around 3.6 Mh/s effective. It's like this no matter what pool I use. Is this normal, and if not, any idea on how I can fix it?