This one can be tricky, as once you get past 8 or so flame notes, they start showing up VERY quickly in other lanes. What I ended up doing (since I don't have the Green Day export... yet) was using the Bandmate power up in conjunction with Flame Notes. Hit the first flame note and then immediately fire off your Bandmate (assuming you have a full bar of overdrive). The bandmate will play all notes in that lane, including flame notes. I've noticed that most often the flame notes stay in the same 2 or 3 lanes (even more so if you get a part of a song with no vocal track), so having 1 of those 2 - 3 lanes covered makes getting to 10 much easier.