Thanks everyone! I got more aggressive with the bolt, assuming it was RH thread and was able to break it loose. (Used the same 4ft cheater I had on it 3 weeks ago, but this time it gave-in. I think it knew I was chatting with you guys!)
Got the blade carrier off and made my way down to the seal. Seems to have a number on it - 7989. Now I just need to find where to get a replacement and instruction on how to replace it.