We upgraded our F350 to one that has a puck system (2017) and upgraded our Super Glide to one that fits into the pucks. The dealer installed it this spring and we went to re-install it for the first time (I know, surgeries have kept us from camping since spring) and I can’t get the handles to lock into place. One of the locking handles hits the “center plate” between the two handles. Is there a logical reason for this? Suggestions?