Do you dislike the vacuum operated stock petcock? Five minutes and you can change it to a free flow petcock.

Turn the petcock to off, remove the fuel line from the petcock and loosen the petcock just enough to be able to turn it so you can access the four phillips screws on the back side where the vacumm diaphram is. Hold the diaphram housing to the petcock while removing the screws, there is a spring that will try to push off the housing you are removing. As you remove the housing from the petcock, notice where the spring is in relation to the diaphram? Put the spring on the other side of the diaphram and reassemble.

Turn the petcock back to the original position and tighten. Reconnect the fuel line and either plug the vacumm line or reconnect it.