1968 Dodge Dart 8 3/4 Chrysler vent leak

Thank you again for everyones help. Moparmat2000 that was a good thing to point out i did check for a flat spot but did not see much of one, its possible the one of there is wrong from the previous owner ill look more into it. Syleng1 i really hope its not that but also good to know as well. I pulled the vent out this morning and could hear a little pressure seep out, i cleaned up the threads and Teflon taped it, going for a ride now to see if it leaks anymore. Does anyone know if the vent piece can also fail internally?? since its only $15.00 ill order a new one just incase. Thanks again for your help its a great hobby to keep you out of trouble especially in this day in age!

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