Pci I can not tell you how many times someone on this forum said to me I have a vac leak, so I'd just check the carb base and intake where it ties to the manifold, but stop looking. I found that not one fitting was leaking but both, the only reason why the fitting on the top was changed because the service manual shows it as a 90 deg. and never put 2+2 together. Thanks again the fresh eyes always is good and When the student is ready to listen the teacher will appear.