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*BAT SIGNAL*
I am here.
I have built an apparatus that has revealed intake and exhaust leaks successfully 3 out of 3 times. It is slightly janky but it works. You are certainly welcome to use it. I am at home in New Berlin hiding from the black friday madness if you would like to retrieve it. Otherwise I can bring it to work M,T, or W next week and can meet you in Glendale.