Ok here is my dilemma. When I bought my 07 Night Train the seller included a whole extra set of tins. My question is does the tank need to be sealed? I have seen the harley article about some of the tanks not needing to me epoxy sealed, but I don't know if this tank is that kind. And to top it off the tank is painted which is going to be tough to do without messing up the paint..... What do you guys think?