Door would not close properly

I stacked three 2x4's that were approximately as wide as the door in length. This required lifting the door about 1/4" but it also got the weight of the door off the cam so the bracket assembly that the cam was attached to could be removed. I drilled out the rivet that held the old cam in place and like previous DIY's had to use a small bolt and nut to secure the new cam in place. Reattached the bracket with the new cam and that was it. The only problem was that the head of the bolt I used was not flat enough to allow proper clearance for the door to swing freely without feeling some drag and the wife noticed that immediately. I told her to wait until the weekend and I would again remove the door and file down the head of the bolt to allow the required clearance. After a few days of use, the door itself ground enough material off the head of the bolt so that the door began to open and close properly. So now she's happy, I'm happy and the dog is happy.