I remember Sirloin. Good stick.
I might wonder if you have combat trim enabled Sirloin, I have it disabled and more of the harder flying charactaristics have come out. I admit though that they are not near as pronounced as they were in the early days of beta or, for that matter, the latter stages of alpha.
I would like to point out though that it is a known fact that the more proficient you become at a task the easier it becomes to do. I think you have reached a point where you are able to do things easily that in the earlier stages of your AH career were difficult. I have noticed this in myself (ACM not one of those

). I took a hiatus from the game for about 2 or 3 months soon after beta and noticed that it seemed more difficult to fly than I had remembered.
Familiarity often breeds contempt. Not saying you hold AH in contempt, just a figure of speech.
Personaly I look forward to the time when I can get comfortable enough to feel a task has become "easy" so to speak. I can then go on and work on other things that challange me.
I don't think making the fm difficult for difficulties sake is the way to go, but I would like to see it as realistic as possible within the constraints of "flying" on a computer and gameplay considerations.