Hey guys need some help. I got a dxl 90 for my son the other day that he really wants to ride tomorrow. I posTed this up in another atv forum with no results. I have cleaned the carb twice now, the first time in my ultrasonic. The oil injection had been removed. Mixing gas 32:1. It runs perfect without the air box snapped on the carb. When I put it on it will bog down and die. Someone suggested to clean a screen on the exhaust bit this atv doesn't have one. Any clue how to get this going? Thanks!