I put it into gear and it dies.

Yea maybe I used the wrong wording when I said to add it as a tuning tool. But there is zero downside to using one and actually significant sealing benefits and maybe even a little power in the ring seal. The idle bypass air will definitely help the stalling while in gear problem. That’s really the point I was making. I do agree with @67Dart273 tjough I think we wandered a little off course.
I agree 100% and I know you've seen my post the PCV diagram many times, only to be argued with. LOL It's kinda like a good operating vapor recover system. There's really no down side to it. lol