I'm starting my first build using a kit from Bamboo Bike Studio. I'm setting up the jig now and after watching their video, they show how to set jib for 120 or 130 OLD. Where exactly does this dimension measure from? I actually need 135 OLD I believe for my Shimano Alfine 11-speed IGH (and my contact at BBS stated the build can do this OLD). I've got a question email out to the BBS...but thought I'd also ask here for the great collective wisdom.

In case anyone is interested, here is the relevant viddy showing the drop out jig setup:
http://www.useful-arts.com/sua/instr...it/lugdropout/


Thanks.