I am not sure of the question, but it sounds like you are asking if the slinger will cause a new problem when added back into the assembly. Short answer~ NO. If you are asking if it SHOULD be in there, YES. It helps lubricate the timing components by slinging the oil around.
The slinger is placed onto the crankshaft after the timing components are set up and before the timing cover goes on. It is a very thin piece of sheet metal that is sandwiched between the lower timing sprocket and the harmonic balancer, it is only about .030 inch thick maybe. Hope this helps.