One of the gentlemen who had been gifted a set of pipes of Sialkot origin allowed me to examine and experiment with them for a few days.

I found it instructive.

I started by removing the chanter and drones and plugging the stocks with rubber stoppers. I then inflated the bag to check for air-tightness. When I did so I heard a hissing sound which increased with pressure in the bag.....obviously very leaky and not an auspicious start, but not necessarily irrecoverable.

A more serious issue was that with both tenor drones set to the same point on the tuning pins, and using the same, known to be good, reed, the two tenors produced markedly different tones with one perceptibly sharper than the other and both sharper than would be expected from the reed and tuning pin combination. It would have been a long, difficult chore of reed manipulation to simply get them to tune together. Since neither of the tones that they produced was particularly pleasant, I chose to forego further experimentation.