Shift Kit

Alright so after taking some more stuff apart and getting pics I found that the sleeve, regulator valve line pressure plug and regulator valve throttle pressure plug where sticking together and I had to tap them out with a driver lightly, before they just fell out, idk if that's an issue but at least that can eliminated.

I think you are on the right track here.
Flush everything out and make sure it all moves nicely.

What is this, fluid or a drilled spot?