I am using Onkyo 5508 Preamp and Oppo 83 BDP. During Transformers BD DOTM in Dolby TrueHD 7.1 I cannot set THX Ultra 2 processing on the 5508. It is not displayed as a choice. If however I load another BD say in DTS MA HD BD THX Ultra 2 is selectable. It appears to be a conflict between Dolby Truehd and THX Ultra 2. Does anyone have this issue? I have rechecked my setup profiles connections etc and everything appears ok.