:/ Thanks for your answer! I was hoping there was a ready source other than ops. I don't like ops for a number of reasons, plus as a preferred player, I can't do them without a weekly pass anyway.
Tangentially related to this... Dread Guard gear (dropping in Level 50 ops) is filled with Advanced 27 item modifications. I know Advanced 27's are also craftable... can green versions of 27's be learned and then RE into blue and purple; or are the Advanced 27's ONLY learnable by RE'ing the Dread Guard mods? (In which case, ops would again be a requirement that I hate) xD
Thanks for bearing with me!