Jielinlinerk said now was the time to strike against the Steel Rake, while they are repairing their ship. You cleared out the Petrahulk Sentinels so that the Shugos could mop up the rest of the Shulacks. After you returned victorious, Jielinlinerk sent you to Himusus in Sanctum, who told you the best way to make money from the Steel Rake: Selling Shulack Pirates' Hairpins. If you want to do that, you'll have to talk with Koruchinerk.