914 Fuel Pressure Measurement

For those of you with carburated 914 engines, can you tell me about your setup for measuring fuel pressure? I understand that you need to measure differetnail pressure between the pressure control outlet and the airbox. I'm aware of the UMA sensor that can be used to do this. The Rotax parts manual shows the fittings on the fuel side that are required, and they include a Bing idle jet as an orifice, but they don't show how this installs. Would you need to tap the banjo nipple? If anyone has done this successfully, I'd appreciate your input.