After finding this, i decided that it wasnt worth a failure on the trail, and ordered some better shafts
Seems the Yukon shafts arent up to the task, so i ordered a set from Moser Engineering:
In the interest of strength, Moser does not machine their shafts for spindle clearance, instead they have this nice smooth transition. So i will have to verify that they clear the spindle , and if not, modify the spindle so they do. Odds are that since its a D70, they will clear just fine.
We'll get some paint on these things, and get em installed later this week!