I heard those can be tricky, especially on a AWD or 4WD due to the shield. Kinda glad I paid a trans shop $50 to install mine. Hope you're not down too long.Looks like I didn't have the snap ring for the servo cover fully seated. Cover was jammed at an angle and pissing fluid.
The seal for the 4th apply piston was pretty messed up. Not sure if it was during assembly or or when the cover went cockeyed under pressure. That explains why I didn't have 4th. I'm assuming loss of 2nd was due to fluid loss since it worked at first.
Don't rush things, take your time. I tried to shave a few minutes off and get things done quickly.