Simple trick - On the "droid factory" heroic you can enter the compound via the "backdoor" or "carpark" as we call it
You simply mount your bike at a distance from he droid spawn then drive to the left hand side against the wall of the factory complex. Store your bike , push against wall and re-call bike and jump on. You should now be half through it and able to drive into the building. once you reach the orange gate/forcefield, store bike and run against the orange door. As you run against it call bike and hop on once again , this will phase you through orange forcefield to the retinal scanner area on the other side
and voilla your in
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