I believe that there is nothing wrong with your fuel regulater except that the one you replaced is way out of adjustment. At the Virginia Meet Jack Singer had replaced his fuel regulater and couldn't get the motor to run for sh-t. Everybody speculated as to the cause but when Rob Grady tweaked the mixture screw it ran just fine! Put the origional regulater back on and fix the lambda system. Don't run the engine on the cold start valve, the excess gasoline could flood the motor and cause a fire. The cold start system is not meant to run continuously and cannot be adjusted. The fuel regulater is meant to actually run slightly lean, the final adjustment of the frequency valve is meant to richen the mixture so without the lambda functioning the engine is running too lean. If you think about it that is what you are correcting by forcing the cold start valve to run continuously to correct the absence of the lambda system. At this time I cannot tell if the fuel accumulater is good or not, it comes into action when you restart hot. David Teitelbaum vin 10757