throttle linkage cable Q

the Ebay sheath arrived & it is only slightly shorter than mine, not sure how I measured wrong but I definitely did. I think now my option is to shorten the sheath at the pedal end. Any thoughts how I can lock the sheath back into the metal piece? glue and or pound the round metal piece to crimp the sheath in place solidly?. I wouldn't think it is under alot of stress, it pretty much just is a cover for the inner steel cable