However, I still stand by my judgement...... I had your photos of the figure copied on a 14GB USB and I made several hard copies of them. I had some of them enlarged, especially the one showing the figure from the side which shows him well leaning backwards.
I had the photos scanned at a friend of mine who superimposed them on an computer generated grid. The grid clearly shows that the backward lean is not a natural pose. By placing values on the grid the computer will be able to calculate the 'true lean' and your figure showed that you are off by 5.08 impex degree which when calculated to the relative coherent true gravity it give the figure an unnatural pose.
Now, just to show that I not only comment but also give you the soluation, I went further to calculate the inert proximation of the gravitational pull from the top of the head (this being calulated and reduced ti suit 1:35 scale... which was a pain to get it correct!), to his lower lumber support. In short your figure should be moved forward just a tad. In engineering terms... .02 degrees forward and -.23 degrees to the left.
Thank me at the club