I know the Cdale site says the trail is 5.1 but the actual measurements and formula for trail do not indicate it is that number. The front wheel has an outside diameter of 685mm the head tube angle is 73° and the fork offset if 53mm. The math comes out to 4.9cm of trail. Please note that fork length is not a direct factor in trail.

Trail=(wheel radius*cos(head tube angle)-fork offset)/sin(head tube angle)

Also adding .03° to the head tube angle is insignificant with regard to trail, and most likely less than the manufacturing tolerance. So my question is, has anyone done the swap and noticed a significant difference in the handling of the bike? The numbers would say there shouldn't be, but is there some anecdotal evidence that says otherwise?