I have my old Crossfire CFA 1000D sitting on the shelf and wanted to play around with it. What are the steps to increase the power output. How do you adjust the voltage on the rails? Do I need ro replace the MOSFETS? Do I need to replace anything on the board. Id like it to get about 2000 watts at 1ohm at 12.5 volts. I know there is a way to do it but dont know how, anyone know??