put on a new tonneau cover and had to remove them. There were a few of those cheapa## bolts that immediately striped and I did everything I could to get them out but couldnt so I ended up cutting 2 of them into so that I could get the tonneau cover on. I figure I will get more use out of the tonneau than the unitrac system, but would still like to replace it.
I still have my rails in the garage collecting dust from when I put my cover on if your interested. shoot me an email at [email protected] and i'll take a pic if you want. I have never used them, not once so I know they should be in great condition