Hi folks thanks for the replys, Disney i don't have the rubber bungs on my frame where the cable goes in and out of the top tube, i'm having a nightmare of a problem with my back brake caliper not releasing properly, i have replaced the inners and outer cabling, i have eliminated ragged ends on the outers , i have greased the inners, and i have narrowed the problem down to the top tube entry and exit of the cable , this is where there seems to be resistance on the inner cable, Big question where do the rubber bungs go ? is there a rubber bung at the front opening and rear exit ? do i need the plastic inner cable sleve re-installed ? My caliper is working fine i took it apart and greased it up.