I got the cables in the CIU square thing. The problem is that the the original throttle cable (has no threading) - the cable has so so much slack, that it looks like it is enough to wrap another 3/4 around the spool. I don't think the adjuster at the handle bar can take it out. Is this normal? Do I need to source some sort of bushing to use as a spacer on the outside between the cable and the CIU?