When I originally timed the vehicle, the distributor dropped in with the rotor pointing at number 5. It ran great as I stated. I am sorry I do not know what a damper ring is. Is it part of the Harmonic Ballancer? I will definitely check coil. I noticed the timing marks appear to be part of the block which are inconvienantly located next to the lower radiator hose which makes getting the marks lined up a lot of fun. Is it possible for the motor to jump time but still consistently line up on number 5? I am currently using a promaster Mallory coil. I was using a Mallory Unilite distributor that oddly quit working after about two days same as the new HEI distributor, or what I assume is a distributor problem. This is my first Mopar build. So, all of this stuff is new to me. Thanks!