I'm fettling a cheap MTB type thing, including replacing all the cables, inners and outers.
The brake levers have knurled adjusters at the cable exit point, with a recess to take the end of the outer. The plastic ferrules I have are a smidgeon too big for the recess, so they don't fit in. Careful shaving of the outside of the ferrule removes enough plastic so they can be wedged in. However, they don't spin freely, so adjusting the brakes is difficult tending to impossible. The outers I removed had crimped on metal ferrules which fitted nicely.
Do I:
A. Run the brakes without ferrules
B. Shave off a smidge more plastic
C. Drill out the recess a bit, so the plastic ferrule fits
D. Other
?