this is an aftermarket crank, an eagle. i am not sure where the fel-pro lip seal rides on a factory crank, but on this eagle, it's right at the slinger grooves edge, just barely on them. i still don't understand how lip seals are supposed to seal on a grooved surface, in my mind, lip seals should ride on smooth surfaces, like the other end of the crank. i fought this same issue on my blown pontiac engine too......