I bought 2 black straight macro fittings hoping to throw them on my marker. I noticed that when i took out one of the old fittings there was like a tape kind of material wrapped around it. I took it to my local paintball shop and they switched one straight fitting with my new black one. I noticed they put some kind of tape on it when they screwed it in. I now want to replace the other fitting, but i dont have that tape. Do i have to use that tape, or can i just swap em out and not worry about it. I think i need the tape, and in that case where can i get it? Thanks.