So I just finished my MB-6582 base PCB. I tried it out with the first two SID chips mounted, success! Beautiful. I mount the other six SIDs....nothing. No startup tones, no LCD activity (not even a backlight). Uh oh. I removed half the SIDs (cores 2 and 3 FWIW) and everything seems to work again. Am I correct in thinking this is an issue of current draw? I am using a regulated 12V 1A supply (using Altitude's single supply approach), which I figured for sure would be enough juice (in the thr