Originally Posted by
Barry2
I'm open to suggestions that don't begin with "SRAM". 8-)
Barry
If it is only a suggestion… shift to the 21t and see if you can use the barrel adjuster to dial it out. If you can and it clicks against the 24t check to see how much tolerance you have going towards the 19t, or vice versa.
From exploded views of a Shimano 12 speed cassettes I think the 5th position cog is an individual cog (not spidered). If it is, you can measure the spacers and flip them or replace one with a slightly wider one. You should take a corresponding amount off the spacer on the other side to keep the index consistent with cogs 6-12.
I can’t say it will fix it, especially 12 speed spacing, but I’ve done this every now and then with an 8/9 speed and a renegade spacer.
John