Yeah, I was just about to reply "see #2 and #9 " posts. Anyway...

I don't think some of these gentlemen would be posting about the pull ratio difference if it wasn't atleast partly true. I have read about that elsewhere, but in my situation....with an older mtb FD....I had to wonder if the tolerances might be different. Since you have to use a top pull derailleur, I mentioned earlier on in the thread that some folks were successfully using top pull mtb/fd's by rerouting the cable. I'd read that on mtbr.com. The thread was about brifters and dirt drop bars on a mtn bike. A fellow by the name of "Shiggy" made replies on how it's done.

BTW, that's a really cool folder build! I like it a lot!