PP2+ already w/green cable on 5 & 6 for Fly-Rig, need 12 more volts for Harmony GXT

[rowroy]

My Fly-Rig works great and I think I already know the answer, but I also have a TC-Helicon Harmony G XT and it would use the same green cable on 5 & 6. Is my only option to use the "courtesy" power outlet for one one of these two pedals?

I saw several posts talking about port 1-4 with DIP switch off (not normal) for the FLy-Rig but I never really found a definitive answer, other than using the Green current doubler cable on 5 & 6 with DIP switches off (not normal) which does work well.

Thanks!