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Another problem we had was a lack of fuel. Fuel pressure was going down as Paul hit wide-open throttle (WOT). Ideally, pressure should rise 6 to 10 pounds when going from idle to WOT. When we checked the regulator, we found the adjustment screw was turned all the way out. We fixed that and got fuel pressure back to 42 psi at WOT, but the engine still wanted more fuel, and the 30-pound injectors were maxed out at 100 percent of their duty cycle.