Hahaha seriously. I really appreciate both of your responses. So ufbeans, thank you for resurrecting the old thread and no you weren't talking to yourself. I'm impressed by both Scrodzilla's bicycle knowledge (nothing new there) and ufbeans's commitment to finding the answer. I spoke with someone at Eighth Inch, but this is all I got (despite directing them to this thread):

"It is possible you could use a 107 with the courier cranks. Will that provide a stronger chainline? Not in our experience. A 107 spindle with a courier crankset on a Scrambler, Manifest or Dispatch frame puts the crankset too close to the frame. So close it might even hit when heavy pressure is applied to cranks."

I had used the word "straighter" not "stronger" so I believe he simply mistyped in responding. But given that response, are you guys still sticking with the 107mm over the 110mm? Or does it truly not matter and I've already wasted far too much time and energy on this decision?

Thank you!