If you guys want, I can record my replays of the tracks, and explain how I did them. Both of the other tracks I have gold, but with faults. This will allow me to accurately have you see what I do and have my explanation match the video exactly. However I only have a SD camera, so I'd have to record the video while it's playing on my tv. however my TV is HD so maybe it will still look ok.
Winding down the achievement hunting...
95%+ Completion (161/191 games complete w/ DLC (Most Recent: Halo: Spartan Strike W8)
Halo Fanatic, Music enthusiast, Duck
(16215/16950 Total Halo Gamerscore)