Thank you again. About #1, will definitely test it. What exactly am I looking for? I know when I began editing (on a sequence with field orders, not progressive), there was choppy motion and stair-stepping on the edges. If that's it, yeah, it was terrible. Was one of the reason I moved it to progressive.
#2 It's definitely a messy process. Twixtor explains the process using Cinema Tools and getting the sync right here:
http://help.revisionfx.com/tutorial/47/
There's also a Compressor tutorial that's all about how to do it w/ frame accuracy:
http://philipbloom.net/2009/05/30/how-to-convert-canon-5dmk2-footage-from-3...
A few steps with each, but fairly straightforward. I'll have to test and get back to you about my results.
The fun thing is, this is the majority of prep of my old files, but not all. I also have iPhone 4 (720p30) Kodak PlaySport (720p60) and another Playsport at 1080p30. All the Playsport stuff has horrible shitter roll to deal with as well.
So, I've got a lot of work!!