So I was bored today and said screw it I'm going to clean the T/B and throw a new PCV valve in. The PCV was, I'm guessing, the factory 1. Anywho, it was completely hollow with a little hole at the bottom. I went to the parts store and got a new 1... and it rattles, like they are suppose to. I installed it back havent driven anywhere. But after looking it up online, idk if I should have the hollow 1 in or the 1 that rattles. Does anyone know?