Trying to get back to the Tmobile based rom. Any help?

So, here's my dilemma. I decided to flash the MaximusHD Rom (WWE based rom). Its smooth but certain things are a bug mentally. Id like to Go back to the US Tmobile based rom and get the OTA update. Im Not S-OFF and dont plan on paying to do so. I have a backup, but its a twrp backup, so it wont allow me to install the OTA. What are my options? Does anyone have a 2.7.531.6 TWRP Backup or a rom i can flash?