I knocked out the internal baffle in the stock pipe tonight. Was looking at my airbox to see what I can to to improve air flow. I see there is a screen towards the carb side with a nice quarter sized plate blocking airflow. Cut that out? Is that a backfire screen? Why the quarter plate there. Then on the piece that secures the airfilter in place there is a half moon metal section blocking airflow. Cut that out? Any ideas. I wish this think had more nuts.