Axle Vent

I'm probably going to make something, as 12many and Dana67Dart suggest.
The problem is, at least from my research, is that all the bolts available, that were used in production are 20 tpi, and I need 14.

I'm gonna look more. I can't understand why someone would change the thread in the housing, just so they could put in a bolt that defeats the vent.
:realcrazy: