When I shoot my Tippman m98 it makes a loud bang noise when the bolt comes back. Is there something I can buy that will make the noise more quite? Also, I noticed when I took a shot, a bunch of white gas comes out of the barrel and out of the bolt hole. When I mean out of the barrel, I mean way out of the barrel. When the white gas come out of the barrel, it makes a circle 1 foot in diamater. That gives away my position eaisly. Is there a way I can fix that too?