So i am so excited that i finally got this lens. Sad part is no matter what i do i cannot get it into focus. It always seems to be just a bit off. On closer inspection i noticed i had it at +20 the highest AFMA available and it cannot get accurate focus. It is just a slight bit front focused. I feel like for a 2500 lens I would want it to be acurate. As i am typing this i am wondering if its on when its at 70. The sample images are all cropped and shot at 200. Should i send it and the camera to canon? I have acquired what i consider to be a set of bodies and lenses i am content with(minus 5d mark iii) and i have heard you can send all you equipment to canon and have it all calibrated to each other. If so what does it cost? Or am i being to picky?