Longtime no post. Anyway I got the S4 Shark for Christmas and 6 blades but I cannot for the life of me get a baby butt smooth shave as I was getting with HB sport with 3/4 blades and getting spotty all over using it. I defaulted back to my 4 blades and same result. The only time I get that smooth shave is with my sport, any tips? I'd hate for that money to goto waste.