Hello.
A 1.2A supply is nowhere near adequate for your application. A general rule of thumb is to budget around 1A per standard size servo, though you can get by with less if you know that only a few servos will ever be running at any given time.
With that many servos, you might consider using multiple power supplies, each powering its own bank of servos. The following picture has dashed lines where you can cut the VSRV power rail into multiple separate banks:
Specifically, you would cut the traces where they narrow along the underside of the PCB. You could also just power your servos directly (off the board).
-Jon