Did you by chance notice if the ones that tested as being Gallstones floated? I know of only passing one that was hard as a rock. I didn't get the courage to q-tip test any of them till my third flush though. And even then I only poked at a few of them out of curiosity. All the other that I poked with a q-tip were waxy some as dense as a candle.
Is it possible that we have formative stages where the stones wouldn't be technically Gallstones but eventually they become gallstones? It seemed to me that the darker the color of the "stone" I passed the more dense it was.
I'm also wondering if they really and truely did the test on the softer ones. No telling unless we are standing there watching I guess. But with conflicting evidence back from seperate tests I'm left confused.