Got an answer from Reese....
If your unit has 2 bolts on top of the unit and then the 2 under the unit: the bottom 2 bolts are used as guide pins and to not tighten to the body of the unit.
Thank you for contacting the Technical Group.
So I guess on mine they are supposed to be loose.
I should specify to you guys that my hitch is the 16k model 5AB-E1621-16K
Eric J
Living the dream...
Wonderful wife, great kids...and pulling something with a really cool truck. Actually I don't even like camping, It's just an excuse to pull a big trailer.:W
2004 F350 FX4 Lariat. 6.0 PSD
2007 CrossRoads CF32BL