Fanbelt problem

Ok, heres a dumb question. I have a '67 Dodge Dart ragtop, slant 6. Stock as far as I can tell. I replaced the bottom radiator hose and discovered that the fanbelt had been rubbing the hose. I figured the hose might have swelled causing the rubbing. When I ordered the new hose and installed it, the same thing happened. Am I missing something? Is this a design flaw or am I just doing it wrong. The hose seems to be the right one. Any suggestions? I really want to get this thing ready for the warmer weather.
Thanks'