My coil connectors have a slot at the bottom that engages with a tab on the coil. The original slots were offset from the center and they matched the coils on the engine. New coils have a tab that is dead center. Dealer is scratching his head. Even with the correct VIN the centered tab coils is what the parts book calls (and they don't have the offset type), but they won't fit my connectors without modifying either the connector or the coil. What gives? Is there any difference? Why are mine offset? '06 530 Xi.