1975 Kawasaki Triple

[Phenix_Rider]

How important is fuel pressure to these things? It seems like the rightmost cylinder is being starved- the line only fills up when we pinch off the two left lines. The petcock definitely needs rebuilt or replaced. Right side runs intermittently, and the center cylinder still seems weak. The left is doing all the work, but we can get the other two going stronger by lifting their individual throttle cables. Makes me wonder if something is wrong with the throttle cable- like the amount of adjustment needed to even them up is out of the range at the top of the carb. Or they're not getting enough fuel to keep up. All the air screws are set the same- 1 full turn out. (Book says 1 1/4, so it should be slightly rich) And all the piston slides are set the same on the adjuster beside the throttle cable input.