The directions from hhi said to follow Harley Davidson shop manual.
It's says to make them swing right to left and end in the center. It should flop no more than right left right left and end center. As little as right left center.
Hope it works.
Btw the jam nut will drastically affect the swing. So leave the top tree fractionally loose and jam it, you might have to do this a few times to get it perfect.