After about 9000km shimano claris st-r2000was broken. Shifts only to 3 chainrings of 8. On video shifts only between 1 and 2 chainrings. I've took my right(rear) broken dual control lever, detached it from bike and tried firstly to move to biggest chainring, after it tried to drop to smallest - only one move happened. After 1.5 seasons of riding (mostly to work and back) during ride it was impossible to shift rear duraileur to smaller chainrings.
