Snipes -- thanks for the reference pic! I have just been following the tutorial and hadn't checked out the model vs. real-life yet. I'm still in the stages of trying to learn the modeling process itself and have been far more concerned about "how" to make the model than what it actually looks like.
Now that I'm far enough along to feel like I could actually have a model of a helicopter someday (after I finish the next 20 tutorial sessions) I can see why I might want to try and get it at least "mostly right".
You are absolutely correct about the tube and I'll be sure to get it fixed.
Thanks for the input. This is a great site because it's obvious that folks like you take an interest in the success of us noobs.