Very strange light leak on Mamiya RB67

Hey guys! I just developed some rolls at the lab and there is a very strong and consistent light leak across almost all the rolls: (http://imgur.com/a/7OYvorw)
The light leak is blue on the negative and comes out red on the scan. It starts strong at the beginning/end of the film and has a consistent line across the edge of the roll. Some shots it manifest more likes waves across the image.

I just checked my Mamiya RB67 and the light seals look pretty good as I changed them this year.

Any idea where it could come from on the camera so I can narrow down where to change the light seals? Thanks so much for the help!

Looks like a leak on the film magazine.

I bought light seals for my RB 67 from these folks, inexpensive and easy to replace. They even have videos to guide you.