mike- thanks much for your reply. Yes, the damper material is somewhat weathered. I suspect this balancer can be used as is, but is obviously not the correct one. All things considered, I think replacing it is the best solution. I'm still curious as to why the mark is so far off; do you know whether there were different balancer versions used which may have had the timing marks in different places?? This would obviously mean the timing cover "tab" which has the timing marks on it would have to match the type of balancer being used.