Originally Posted by ShannonM

Yeah, I'm way late to this party. Still, the topic is of interest, and your experience is unusual, so I wondered:

What you describe sounds to me exactly what happens when you replace only the cassette in a long-established drivetrain, and the rest of the parts get offended and sulky and won't play with the new kid. But I've also heard of full overhauls failing in exactly this way.

This is why all that one can say about mixing cassettes is, "It almost always works." The "almost" is doing all the work there. Yours didn't. It's an exception. Exceptions are interesting. I'd be curious to know more.

--Shannon

PS: I'm a confirmed necromancer. Mostly because of my deep and abiding loathing of VBulletin's search engine. (Actual quote from the developers: "Search sucks. Deal with it." That was more than 15 years ago.) Reviving dead threads that have relevant information in them is almost always preferable to starting a new one, because the more threads there are to search through, the worse search sucks.