Putting the finishing touches on a 3 year restoration of a John Deere 620. We rebuilt the carburetor and it has a leak below the bowl. I think it is coming from the nozzle there in the carb. I replaced the Orings and it still seems to leak. Does the nozzle get screwed in tight or is there some adjustment in it? I plan to test my theory there tonight. The carb was rebuilt in the beginning of this adventure when the owner wanted to fix some issues and then drive it but then decided to go ahead with the restoration. So are there any Marvel-Schebler Carburetor experts here to give me some idea. I replace the O-ring in the nozzle put on a new bowl gasket and seal around the bowl nut to no avail. I am wondering if the bowl is in need of replacing but I want to be certain before spending 60 bucks on a new one. I believe it is a Marbel-Schebler DLX94.