I have trouble indexing my SRAM Apex 1x drivetrain. If I get it to shift correctly at one end of the cassette, it doesn't shift so well at the other end. Sometimes I have to click multiple times at the DoubleTap shifter to make the rear mech move enough for the chain to jump to the next sprocket.
I have tried the usual, first of all the chain tension barrel adjuster at the rear of the mech. Also, I have tried removing the cable from the mech, changing the tension. And fiddling with the B and limit screws. To no avail.
For context, the drivetrain has recently been moved from a few years old bike to a brand new frame by a seasoned bike mechanic.
Could a slightly bent rear mech cable under the BB be the cause of the poor shifting (see photo)?
And if so, can something be done about it - other than replacing the cable?