I have a friend who replaced his timing belt and I think he missed by a tooth. It starts briefly and dies. When he replaced the belt the rear cam sprocket got away from him and he rotated it 360 degrees clockwise to get back to the mark. Does one rotation put it in the right place? We took the covers off and it looks to me like the marks are a bit off on the cams when the crank is at TDC. I guess a good way to ask this is if you took the belt off totally and had to reset the marks, what is the process? Is there only one position on the cams or could they be 180 off? Thanks!