Iv been playing halo 3 since release on and off and i consider myself to be on ok player but I am really struggling to rank up and increase my levels. I am currently a Colonel, Grade 2 and Highest Skill: 40 but i am really struggling to get a higher rank. So can anyone please help me through playing doubles? I am a level 22 in doubles. If anyone could help I would be extremly gratefull. Thanks! 
Here are my details-http://www.bungie.net/Stats/Halo3/Default.aspx
Gamertag- II MUTiLAT3R II
Here are my details-http://www.bungie.net/Stats/Halo3/Default.aspx
Gamertag- II MUTiLAT3R II