Bag 4 was when I really felt the flow of the build. I am not going to lie there were times when I would struggle with some of the pictures in the instruction manual. But now I feel like I actually got it down. Until I got to the hood the picture didn't show me what was supposed to snap into what so I messed it up and it took a while before I figured it out.
The final bag was super chill. Putting on the wheels and the doors felt like putting the last drops of icing on a great cake. It was during this bag is when I realized that as annoying as I found bag 2 it made bags 4 and 5 feel so rewarding.
Now that I am done it all feels extremely rewarding. There were times when I felt so annoyed and I wanted to stop. But seeing the final result makes me want to do another maybe not as big though. Seeing the pistons move as the car rolls and the trunk, hood, and doors open makes me love it more for those details.