Yikes! That's the drop in.DIO (dealer installed option). Looks like poor preparation before install. Dealer probably didn't clean bed prior to install. Get it fixed under warranty.
I just installed last week & got water in after heavy rain. I didn't see much daylight coming thru. So not sure where leaks might be. Guessing corners towards front of cab?
Thoughts?
Looks sharp! When lowering & lifting tailgate is the spoiler sturdy enough to hold onto? Otherwise, I assume difficult to keep hand on handle for support.
Personally, I don't like to open gate and let it drop freely.