Why does my chanter sound like crap?

[chasem]

It's just two ordinary Gibson long PCs with certain holes plugged.

The hole configuration is

o ooo xxxo
x xxx oooo

o= open hole
x= plugged hole

In other words each hand has its own chanter, and when using ordinary Highland fingering one chanter or the other is always playing Low A giving a 'virtual drone'.

The special double stock was made by New Zealand piper/pipemaker Yuri Terenyi. Yuri also made the blowpipe and bag, but any bag and blowpipe would do. It's the double chanter stock that's the main thing.

So if I were interested in duplicating the setup, is it safe to say the simplest route would be to contact Mr. Terenyi for the bag and blowpipe?