I did research on the 34/34 Weber, cause they're cheaper than the 36's and 38's. Man alive!!! Lots of people dog on these things saying they're not real webers and they don't work the same. I went ahead and got it and boy o boy was I pleased!!!! I've also learned through plenty of research that the Carter 4070 electric fuel pump is the only way to go. No need for a regulator, high volume, low pressure, right at 4 to 5 psi. So anybody having troubles with their weber, maybe I can help.