Trigger pin the wrong way is going to need to be punched out in whatever direction results in the grooved top of the pin moving out of the frame first. So put the punch on the smooth end.
Feednecks. Clamp them down around a dowel or something you don't care about and that gives you some good grip.
Remove the ball detents. Heat the bottom of the feedneck gently. A hot hair dryer may be enough. Then twist the feedneck out anti clockwise.