Uneven fridge door that wouldn't stay closed

With my wife's help and following tips from previous posts, I removed the top hinge screws and lifted the door off the bottom hinge. The shim was old shim and both upper and lower cams were totally flat. I drilled out the rivet in the bottom hinge, replaced the cam and secured the cam with a pan head bolt and nut. I replaced the cam and shim on the door and rehung the dorr. The upper screws were screwed back into place and ta da -- now the door closes and stays closed without sticking that little piece of cardboard between the doors.