My wife got me a new B+W 77mm Kaesemann MRC Circular Polarizer Filter from B&H for Christmas. I took it out of the package and there were some spots on the glass and there was an oily residue on the male (inside) threads. I grabbed my rocket blower, lens paper, and light strength lens cleaning fluid and tried to clean it. After 20 minutes I realized that I just can't get the surface clean, it keeps streaking and I can't blow the lint from the lens tissue off the surface. The problem appears to be on the outer surfaces, not between the layers of glass. I've never had this much of a problem cleaning any of my other filters (all B+W MRC) or lenses. Any idea what I am doing wrong, or do I need to return this filter and try another one?