Thanks, you may have saved my board! I assume he was planning on limiting the current going to the shift registers, and thus limit the current leaving them and going to the LEDs, correct? And what about the schematics that use the LED on the cathode?
I guess I'll have to buy 600 330 ohm resistors. I better get ready to spend a few weeks soldering.
P.S: Your posts have been a result in virtually every Google search I've done on this subject, and they're always helpful and well-written. I just wanted you to know how much I appreciate all the help you've provided.