1/2 inch lower than the left side. It seems to be the frame that's the trouble not the bed.
I first measured at the top of the tailgate then the end of the frame rails, axles and the bottom of the fuel cell.

It's a TCI spring kit back there. Will I need to shim the right side up or is there something I'm missing?

TILT 1

TILT2.jpg picture by BIGCHEVY3600 - Photobucket