Hello I see richard sells a quite muffler kit for the briggs. Whats the difference between the regular muffler and the super quite one? I'm putting a kohler twin in my max II and I'd like to quite it down but i'm wondering what the best way of doing it would be. Whether I just purchase a quite muffler and adapt it to fit or fab something else up. I'm just wondering what makes a muffler super quite, extra baffles?