I had used xx1 genuine and and doval 32t for a year,
and this time, I ordered 26t for unconquered up-hill, and 36t-16% for dominate cycles on the road.
However, Installation is hassle, so I decided to install 26t, 36t all at once!!!
Installation was not a hard work, chain tension trouble occured.
So I did optimal setting for chain tension, succeeded shifting test. whew.........
I will write a riding review afterward, cause having a get-together next day. :)