I have had my 2002 Acura 3.2 TL Type S for 7 1/2 weeks now and I have already put on 8 coats of Blackfire? Is there a point of diminishing returns for this product? If not has anyone found an optimum level of coats? I am considering putting 10 coats of Blackfire on and then topping with Souveran. I appreciate any feedback anyone can provide.