so I finally got my car back together. I got the trans from a wrecked car and it is a turbo specific one too. first and foremost I found these when I was dropping the pan to change the filter


no idea what those are...
however its issues are:
occasionally it will absolutely slam the 1-2 shift, way harder then I feel it should
recently it will get fits where it won't want to engage first gear leaving a traffic light or a stop sign. sometimes it will do it no problem other times it will rev like its in neutral till you give it way too much gas then it will bark the tires and then start moving fine.
today I started it and it would not go into reverse or drive then a minute or 2 later it went in just fine.
I should mention that before I installed this trans it sat unused for several years, dry in a garage under plastic.
more often then not it performs overall well it will upshift, downshift good. TQ lockup works fine
basically is there anything I should look for, or am I screwed and in need of a trans rebuild?