Bakflip style rail bending aluminum body.

[OneBadSS]

Here is a screenshot from a 2017 Ford Raptor install on youtube.

Clearly has shimmed rails not a block of plastic like I received.

I have the same plastic on my rails as you. Tried removing them after mediocre fit, and it was worse without them. I put them back and that's how it sits after a week. Not thrilled with the fit and finish, but does not look as bad as yours either.

 

[EricM]

Either make your own shim setup that fixes it or send it back. What else can you do. I have to modify pretty much anything I buy in some way to make it perform the way Iwant.

 

[crv]

I had to remove those "shims" from mine for the rails to be level and cover to operate as it should.

 

[jes.jr]

I sent bak an email w pics above. Worst case I'll rip some acrylic or something w the table saw in a long tapered shim. Without some type of shim it seems the flaps on the cover won't seal as well because the cover won't sit as low. My 13 had a taper on the bed but the gen2 seems pretty close to square.

 

[Tonecapone]

I made my own shims out of an old plastic pvc box from Home Depot. Its half the thickness of those shims and works much better.
Tone