When installing an Edelbrock carb on a Honda XR650R, one thing that should be done is filing down the front right corner of the carb. If this is not done, the sharp corner can rub a hole in the bottom of the stock gas tank resulting if fuel loss or worse. It only takes a few minutes to do, the carb does not have to be removed, in fact, it is easier to do with it installed. File only enough to remove the sharp corner, the integrity of the clamp will not be weakened, and by doing this, your pig won't become a fireball out on the trail.
Special thanks to Dafna for taking and posting photo's.