You might ask "what's the ideal positioning of your hands" and the answer is "any". So I gave it a shot and slowly came to realize that it was a fundamental key to playing the game. Then I looked over to the Konami expert course charts and realized that 99% of players were using Hi-Speed, and the really fast settings at that. When I started playing IIDX with 3rd Style, I was still in the mentality of "wow, I could never use Hi-Speed, that just makes things too fast" on top of "I've been playing Beatmania since 2nd Mix on PS1, so who needs to play these Light 7 songs, to hell with this, I'm better that." So there I was trying to play stuff like era and Safari with no high speed - suffice it to say I was getting obliterated with damned near each song I played. Unlike RB/GH, it's entirely possible to play a song 100% correctly and fail by fucking up the last 15 notes. In IIDX, the question is how much speed adjustment you can handle, because how well you do at the game entirely depends on being to process the volume of notes in the song's short period of time. If you were looking through the Rock Band thread recently, you'll see that there's some people who are questioning if they should use Hyperspeed or not. Keep experimenting with all game options at all times. Timing adjustment started with Happy Sky.