I just got most of the parts to build a new pedal board power supply. I ordered 9V regulators rated at 1A and I've been told that as a matter of practice the transformer should have a output voltage of at least 3V higher than the voltage your supplying. Now for the dumb question... The transformer I have is an 18V 2A secondary. Should my voltage regulators also be rated at 2A? I do plan on having at least 9 outputs if that matters.