hmm. What I don’t understand is that from what I have read, derailleurs don’t have a pull ratio, the pull ratio is controlled by the shifter. The DR only has a range of motion, and the indexing within that range of motion is set by the shifter. So, if a DR has the appropriate range of motion, how can there be a road and mtn difference in a derailleur? The only way I can think of if a shifter doesn’t function with a DR is if the crankset doesn’t match up in some way. Confusing stuff.

Good tip on the cable, I would not have thought of that.