I decided this weekend to make a pc board for the DC-DC voltage regulator circuit. I have not used the pc board machine for a couple of years. It can only do single sided or 2 sided boards. I designed the circuit and board in “Eagle Software”. That software puts out a file, Gerber format, that the machine takes in and cuts. Decided to go with Kevin’s advice and put 4 LM338’s on it. So it should be able to handle 20 amps. Trying to brush Azul’s hair I had the 2 channel DC-DC circuit (now in Azul) drop down to 3.3 volts and fail. Kevin is right you need more than 10 amps when moving many servos. I had to order parts but will update you when I get it installed.