Has anyone found a reputable after market board repair house for replacing GPUs on the early 2011 MBP logic board? (This defective chip also found its way into a few late 2011 and mid 2012 models.) Ebay of course is full of straight up scams. That same pic of the surface mount machine in all the ads and some joker baking logic boards in his kitchen oven. Which sometimes then work for another month before failing and now being further damaged and unworkable. Can anyone recommend anyone?