Stromberg 97 Issue

[JR48]

This afternoon Flathead Ted came over to check out the Cabriolet, now nearing completion. I fired it up and suddenly it's running rough and gas starts streaming out over the garage floor! Quickly I turned it off, averting total disaster. Undoing the main inlet we discovered an S-Jet inlet valve rather than the regular needle and seat. The carb is a new Stromberg 97, should I look further for any other carb issues, replace the S-Jet with the older style inlet or is there something else I should be looking at. It's made me very nervous around starting the car up! I've attached an image of the car, it's present condition is due in part to the many Fordbarners who have helped me over the years with my questions and requests.