Good luck. Definately pull the trans and check it out.
I don't know of a why to really check the line pressures without putting it on a lift and running it with a gage.
Maybe that's what you'll have to do after its back together.
All of the road line pressures were fine. It slips out of gear at an idle. Idle pressure was a little low. I believe it’s a seal in the rear drum or a valve body side plate.
I still wonder if I didn’t grab first instead of third? I’m use to my car with a reverse valve body. But I’ve been driving this car all spring and have never done this before.
It’s all a blur honestly. But it’s the only thing that makes sense