It's done. Did it solo over the last two days. Took 7 hours to get to the core and 5 hours to put it all back together. Relatively straight forward, just time consuming. Still have to drain and refill the cooling system after the flush and get the AC recharged. The old core seemed about 70% blocked just based on me trying to blow through it.
Wow. Did you take any pics of your efforts. I get minimal heat on the driver*s side and it*s barely warm on the passenger side with the temp turned up to max (90). For a while when the weather was cool in he mornings, I had the a/c off and the temp set to max and the P011a code came on. It warmed up so I turned the temp back down and the code went away. From what I read, the code can be thrown if the two sides register a difference in temperatures for a number of starts. I guess when I turned the temp back to cool, the heating system wasn*t active so the code went away.