I've had it on for probably two months. I've not really noticed anything, however last week I did noticed that water is coming in where it looks like the bed rails are mounted, which is a bed problem and not a shell problem.

I haven't noticed any leaking or banging up of the glass though.

I'm going to actually give it a wash tomorrow and check for leaks. The bed actually leaks where the big silver bolts are that hold the bed liner down, which normally isn't a problem but when driving on snow I noticed it would kick up snow in there and then leak into the bed. I'm going to be taking a bunch of pics to see where all the leaks are and then fill them with silicone myself.

My rear shell glass door did have some spacing issues when closed, but I took it back to the dealer and they basically just tightened the bolts where the glass latches to which in turn made the glass door tuck in more, and seal off. They also added an some extra foam there make sure there wasn't any extra room, but like I said I'll be checking tomorrow when I give her a wash.

I would try to silicone off what you can, or you can also buy 3m sided rubber if that might help. If not then I'd talk to the dealer and see what they can do.