I know some of you have installed this on your 2017 Superduty. Did you have to use shims for the rails? If so, did you have to purchase them separately?

 

I did not use any shims on mine.

 

Huh, okay thanks. It just seems like the rails don't sit flush and need shims. Thanks.

 

Mine came with shims that I had to remove before it fit properly

 

Awesome, thank you. Mine came with shims on the top of the rails which makes it slant downward. I wasn't sure if I was supposed to add shims to the bottom or just take the top shims off. I'll probably do what you did and take them off as well.

 

I put mine on with the Shims in place and it works really well the cover clicks into place and holds nice and tight. I had a bit of damage in shipping, and they insisted on replacing the top. Good company, stand behind their product, and it fits nicely on my truck.

 

I don't recall seeing shims in my kit and if they were on the rail I didn't notice anything unusual so my assumption is I do not have shims and I know I did not had shims and mine works great.

 

The shims are pre attached to the bed rails, so you have to remove them if you do not want them on. I left them on and mine works fine.

 

Any tricks to keeping the rubber from freezing to the tailgate? Other then of course do not get it wet.