Video Verizon htc m7 on simple mobile (t-mobile) mms

I have a Verizon branded M7 that I am using on simple mobile.
I recently rooted it and managed to get s-off. I am running the Viper rom, I thought by installing a Rom my mms would work. I am able to manage my apn files and applied the settings according the simple mobile website. Everything else works but mms, is there a possible fix for this?