My prints are not centered on my build platform. In Repetier they are centered on the grid, but in my printer they are farther toward one side of the platform (away from the side with the electronics).

This, I believe, is what may be causing most of my prints to start lifting up and curling one one side, where the rest of the print is fine and stays flat toward the center. The lifting happens closer to the edge, where the platform may not be as hot as the center.

I can't find where to calibrate the center of my prints so it is an even spacing all around. Attached is a top-down view of a print in process. As you can see the sides the print is nearest, and I even had a clothes clip trying to hold the curling down, which ultimately did not work.