Ended up replacing the radiator. I shopped around a bit and then decided to try the $67 radiator from eBay - pleasantly surprised. Been running on it since Sunday without any issues. Here's the blog post on the replacement.

http://vehicross.blogspot.com/2013/0...-radiator.html

As an aside - the old radiator was practically rotted through and very brittle - I show in my blog what happened when I applied light pressure to press out the fan shroud retaining nut - a large piece broke out. Keep an eye on your OEM radiator if you're still running with the original.

-- John