Mine was more of a problem of moving them to the inside. I had now wheels in the way of mounting the scratchers but in the way of hanging them up on the rail. If I moved mine to the inside the wheel would rub on the drive lugs. If I ran mountains all the time I would just remove that set of wheels. However, I have to take trails and plowed roads too much to feel comfortable removing wheels. On my pro I added the wheels and ran scratchers. So that is how I ended up with the Dura-Flex. Nothing is in the way.