I printed out the 'main' instructions on paper and had the 'delta' instructions up on screen and went through and highlighted the step numbers on the main instructions sheets that I needed to reference the alternate instructions. This way I didn't skip any important changes.
The kit owner was on IIRC and answered a couple of trivial questions. I made notes so I can compile all my questions and the right answers and feed them back to get an instruction update for the next person that goes through the process.
At 1 am, I did have a stumper of a question – which was I grabbed the wrong bag of parts and they didn't fit where I was trying to put them. I figured it was a good time to quit at that point.
I have a video at http://youtu.be/8ADK50T489A