The dg nerfs didn't line up quite right on my warrior until I stretched them out a little by standing on one end and pulling like hell on the other end. Don't know what else to add about installing them. I thought it was pretty straight forward once I got them to line up right
Nerf bars rarely line up right on anything. Best bet is to just work with em, get them to were they will loosely fit (get all the bolts in) then tighten them down and it will bend them right into place. What i did atleast.