I can’t answer for the genuine Weber 32/36, only for the Holley Weber 5200 variant. The jets are located in the bottom of the fuel bowl on one side. So if you mount them with the jets toward the front of the motor, on a hard acceleration or launch, the fuel sloshes away from and toward the back of the carb and uncovers the main jets for just a bit, enough for a bog. If you mount them with the jets toward the back of the motor, on acceleration, the fuel is now sloshing toward the jets and no momentary uncovering.
