the thing that seems to jump out at me is the idea of fluid going out the vent tube. It only really did this when I ran it up the highway. I had been driving it on the streets and secondary roads for about a month and it really didn't leak this badly. I did put in a new filler tube that had a locking dipstick that had a different type of grommet type of seal instead of the O-ring. The gaskets and the O ring around the pump are new and carefully put in. I had a tranny shop install the bushing and shaft seal for the Transmission pump. seems like the higher RPM's made the fluid come out. (3.55's with 14 inch tires at 70 MPH) Relocating the vent?
How do I do that? Can it be done with the transmission in the car? Ughhhhh!! I'm getting tired of pulling out this transmission.

451 Mopar
So, is the Sonex lube pressure valve the fix for the leak or for the drainback?