Ok so editing the file did not work.

I can dig into the SQlite and see what I can come up with, I will also see if any of the Devs at XDA may have the MMS headers

Is there any other reason I am missing that could cause this issue?

Brief recap for any newcomers:

I can receive all MMS

I can only send MMS to tmobile users (my network) all others do not receive my MMS

My SIM and MMS work perfectly in an old Samsung Vibrant (Original Galaxy S), sending and receiving from all cell users

Tech support at tmobile say everything looks right on their network

ZedThou is also seeing this same issue.

Edit: Posted to XDA here:
http://forum.xda-developers.com/gene...d-mms-t2997180