Please help diagnose my printing problem - stringy areas

[cbgrey]

Hi All-

I'm having a particular problem with my printer that I just can't seem to figure out. Could really use some help. As you can see in the attached pictures I'm getting some very weird yet consistent stringy, unaligned layers. Specifically look at the frog's throat and the gopher's eye. It seems that no matter what I change it has no appreciable affect. What's most frustrating is that 90% of the prints look quite good but there are small areas that are terrible. The area is pretty consistent from print to print of the same object.

What else can I try or look at?

FlashForge Creator (dual) - purchased 12/2013
Installed Sailfish firmware awhile ago (not sure what version)
Using mostly MakerBot Desktop but sometimes use ReplicatorG. Similar results.
Makerbot PLA - variety of temps from 190-230.
Layers from .20 to .30
Speeds down to 60/90 and up to 90/120 - no difference.
Thinking the second head was interfering or that the weight of the dual heads was too much mass to move around, I removed the left extruder and raised the nozzle well above the build plate. No real difference.

Any thoughts, tips or guidance would be very appreciated.

Thanks
Chris