Dang, they all seem to break there. Wonder how long mines going to last @ ~425 ? :-( They got a big *** balance hole there that doesnt seem to be centered, bigger thrust side? I had to chamfer my bearings too.
I haven't seen any pics but that's what I've heard too. I could be wrong but don't think the big hole is for balancing, I think it's to lighten the crank. The Molnar crank I just bought has a much smaller hole so it's thicker in that area. I got super lucky it never tore anything else up when mine broke. I even had mine magnafluxed before installing it. No one around me could x-ray it or I would have done that. Good luck with yours