Upload & Sell: Off
Shield: I feel your pain, and I may be in the same boat. I sent my 5D3 into Canon to rule out any AF issues with the body, but my first copy of the S35 front-focused way beyond what MA could handle, and the second copy required a +15 adjustment. I didn't have the chance to try it out with that adjustment enough before I sent it to Canon, but in one AF consistency test I did with FocusTune and the LensAlign target, it was going back and forth between focusing accurately, back-focusing and front-focusing. Extremely frustrating.
I should have my 5D3 back by the end of this week, and will do more testing.