BGriffin9

Has anyone run into trouble installing the access roll up tool box compatible cover? I am trying to install in my 15 sierra HD ( I know, wrong forum but not as many after market folks over there yet) and cannot for the life of me get the provided clamps that hold the rails to tighten securely. I've cranked these things down tight and even with the slightest of pressures the rails are sliding off. Any thoughts? I was thinking of throwing my impact wrench on them but am skeptical of just sheering the bolt. Thanks!

Has anyone found a permanent fix to this or seen resolution by replacing the assembly? My 2015 HD is having this problem now too. This truck is turning into a headache too soon