Yes.  Similar to you, as I move up my bag, I hit less and less of a draw to the point where my 3 and 4 irons generally have a bit of a fade.  The irony is that with my 3 wood, hybrid, and driver on my mishits, tend to be snap hooks.

My handicap isn't as low as yours and I recently went through a series of lessons.  My instructor had me working on keeping the club a bit more vertical (I tend to lay it off at the top), and start my wrist break a little earlier in the backswing.  This helped me to get around in time, otherwise I tended to be late and leaving the face slightly open.

Hopefully, this helps you, and take it for what it's worth, but a lesson or two may help.  A swing adjustment, even if very minor, may be all it takes to straighten out the long irons. 

I had this problem and solved it with a tempo drill....I think that most will swing harder with long irons trying to get ball up and achieve distance...Take your 8 and 4 to the range and alternate swings until your tempo is the same....Do the same with a 9 and 5 and then a pw and 6...With the longer irons its harder to feel the club head weight so tempo should be apparent. good luck