Talk:The Grustrag Three/@comment-216.36.21.204-20140823155455

Hey can anyone help me out? For a while now I've been wanting to fight the G3 but I've been having trouble getting marked. I've done probably 20 or so Invasion missions against the grineer but I still never get the message from Vay Hek. Is this some sort of bug or am I missing something?