Originally Posted by
mw22224444
OMG, this sounds awful. I'm open to a disc setup for a gravel bike but dreading this type of problem vs the simple rim brake. Maybe the next gen disc will simplify things more.
Anyone surprised by this hasn't read a Shimano manual for setting up derailleurs. There isn't anything out of the ordinary with the complexity of the instructions per se...the more compact R8K and R9K simply have different reservoirs that require a particular orientation to in order to ensure the purging of any entrapped air.