One common cause of light leaks is worn out light seals in the film magazine. I've never done it, but these are apparently easily user raplaceable. Look on E-Bay for kits to do it.

Quote Originally Posted by michaelsalomon
well, i just developed my first roll shot with the hassy, and I was a bit surprised.
What I found was possibly a light leak, but im not sure.

Does this sound like a mechanical problem? Ive heard about film not being tightly spooled with hassy back, and since this is an older camera, i wouldnt rule out light leak.
Ill try to post an example once the negs dry.