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i replaced the timing belt on my 03 F90 yesterday per the repair manual. one thing that bothered me somewhat was the process of lining up the marks on the cams with the crank. the instructions indicate removing flywheel then turning crank to align a hole in the plate below drive gear with a protrusion on top of the block along with the 2 marks aligned on the cam gears. i had the mark on the crank right where it was supposed to be but the 2 marks on the cam never were in perfect alignment with one another. they were maybe 1/4" or tad less off center from one another. everything went back together without anything moving but all the pics i see looks like those cam marks should be lined up with one another. is this a common thing and i'm just overthinking? Engine started and ran ok. thanks in advance