I think you should explain that you're OCD - like Rainman - to everyone, 'cause at this point you're just a jerk.

In that case I suspect a rack has seized or slipped - try to work some penetrating oil in between the window and frame around 3 inches from the corners where the racks join - use a spray tube to get the oil in - just gently work the handle over the next few days while adding more oil - sometimes the mechanisms just need a good oiling and they will start to work again.

When last were you able to open it?