I remember this from the last forum.
You have a long detail synopsis of it and the height barely came in to play. So much more was important than the height. His abuse, his "sleeper" status. His social awkwardness (which is attributed to his abuse). All of these things take president.... but the character is worried about his height because he cant get a girlfriend?
That was my only issue.
The character has such an interesting story that his height isnt even an issue. It can be an issue for the character (he feels he is inferior because of his height), but it doesnt take over the story and should not be the main focus for readers. He should be more angry and upset that he was abused, experimwnted on, and brainwashed.... not upset that after all of it, he is short?
If you WANT it to be, though, the other bits about his back story, in my mind, need to take a back seat so that the ONLY focus is about his height difference. Because as it is right now (or, at least... from what i remember from the last forum), the height wasnt important.