I was up on my roof of my 267 sr the other day replacing a broken aeroflow vent cover,(replaced it with a camco) and noticed that my antenna edges were rubbing into my rubber roof,I don't know if this is just something with the 267 floor plan and the location of the antenna,but it's worth a look,I fixed it by putting some weather stripping on the edges that were rubbing, I will see how it holds up if not good I will just have to bend the ends up a little.