93 Civic D15B7 Just finished replacing the head gasket. Trying to set the timing belt and I can't seem to get it lined up correctly. I'm at least one tooth off every time. Is there enough adjustment in the distributor to make up for one tooth, or does it need to be exact? When I jump the service plug to set the timing and move the distributer, it doesn't change. When I put the timing light on it, the marks will not stay within the beam of the light. It's not one side of the beam or the other. Sometimes the marks are there and sometimes they are not, but they never stay still they are always going around. Starts and idles fine but as soon as I put it in gear and give it gas, it bogs out. I have to rev to 5k to move. Any input would be greatly appreciated.