I'll test the 10 tubes problem tonight. Didn't know there was any issue there. Nobody has ever reported it.
Make sure it actually hears you when you say "i have ten tubes" by trying that command before you enter the game a few times.
This reminds me of another suggestion someone made - a simple audible feedback anytime a command is recognized and successfully processed. A very short, quick "blip" would be all that is necessary. Hopefully the game doesn't dominate the soundcard, I think I will add this tonight and make the MP3/WAV file interchangable of course so you can use anything you want.
No clue about TrackIR, sorry