It would be like installing a control board that uses locating dowels, but you miss with the alignment of the dowel, then when you tighten down the board, the dowels crush the board, instead of the board sitting flush. It's super common and I have done it before. Maybe I say it's super common to everyone that will listen, simply because I did it myself, and want to make it sound super possible, but I have read about it happening lots as well.Yeah it comes in the cam. It indexes the cam phaser to the camshaft. On a traditional cam sprocket that is non variable timing, you can see the pin on the camshaft go into the sprocket for indexing clear as day. There is zero doubt it is installed because you can see the tip of the pin coming through the hole of the cam sprocket. With the vvt version, it's blind.