What do you think. There is no shiny blackness anywhere inside the liner. The black build up at the very top of the liner is where i ran some mil-pak. From the pic you can see where i flaked a little black stuff from inside the liner with my finger (whole inside of liner is in same condition) and the shiny liner is seen. When I look down the liner the sides are black and a little cob-webby. On the outside of the cap there is some black shinyness...should this be a concern? Thx for opinions