Perhaps it’s that California stuff that Ted uses. 
A friend of mine gave me some tubes that he had gotten from Ted, but I haven’t made trash/reeds with it yet.
Of course, my ears are 62 years old and I can no longer hear the horizontal output of a TV, so I could now watch it comfortably if I watched TV.
That means my high hearing cut off is less than 17 khz now, so if there are real high harmonics (after all, doesn’t the reed produce a square wave, so there has to be unless the chanter filters them out) that change, I would have trouble detecting it.
As far as the dulling of the tone goes, someone mentioned that there would be a grain raise after soaking in the oil.
After following David Daye’s experiments on the mailing list, I modified my method somewhat. I make the slips, rough sand them to the thickness I want, then soak them overnight in distilled water, weighing them down with a kitchen knife to keep them under water.
Then I dry them in a warm place (6" away from a 40 W bulb is nice) until bone dry. Then I fine sand, finishing up with 1000 grit wet/dry sandpaper until they are shiny, then, I moisten my finger in the water and dampen it and let the grain raise again (very little if any), dry and polish again with the 1000 grit, then soak in the oil.
Perhaps it’s the grain raising technique that I use that makes the difference. I haven’t seen anyone polish the insides as shiny as mine are in any of the reed workshops I have attended.
Actually, it is all controlled by the moods of the good folk, so just don’t tee them off.
