...so I just did the light shining in the curtain test and it turned out negative. I put it up to a lightbulb for about 30 seconds each time. I'll do another test with more time because what I'm noticing is that the shots that it shows up on are times when I was carrying around my camera for about 15 minutes in between photos. If this turns out negative, I'm going to just shoot with my camera in a black bag. haha.
To see the light leak you have you will have to have the camera and yourself in total darkness and the light source outside the total darkness as the leak you have will be a very dim yellow on the order of looking at a candle flame through a #10 welders glass from 10 feet.