After installing my TransGo kit and driving the car around, shift points were all over the map and lots of ATF was lost I finally figured out what might've caused all this.
First of all, the brand new TV cable I got from the GM dealer is shorter that the one I had on the car (back to the old one now), second my servo cover popped out, the O-Ring is not good anymore.
I guess the servo cover came out because I didn't seat the wire retainer in its groove properly. When I put it in, it was a pain in the back and I thought it was all the way in, obviously I was wrong.

What is the best technique to put the stupid retainer back in properly?
The tranny is in the car and when I did it, I stuck a screwdriver between the cover and the floor pan to push the servo in and then seated the retainer.
Is there a special/easier way to to this?

Thanks.