Q: Camshaft gear issues.

so autozone sold me the wrong belt, which ended in my cam gear breaking off of the camshaft, so i bought an aftermarket gear for the same model in a later year it was the only one that i could find and i did my reserch, anyways it came in the mail today it went on great it was the perfect size same ammount of teeth runs in good sequence, i dont know of my old gear getting ripped off did something to the end of my cam shaft, or this new part which isnt exactly the same doesnt necessarily look the same but if it was the wrong size my car would sputter a few times and then be completely out of sequence the car runs fine except for what seems like the camshaft gear looks like its vibrating or making some kindof noise like its about to fly off the side of my motor