On my CDI, I run a line from the sail tack, down to a point on the furler that holds 3 turns of the line, back up through the sail tack, down to the furler again…each time pulling tension on the line to pull down the t…..one last time up through the tack, down to the furler and then tie the line.
i don’t have a good photo, but the CDI website describes it as “lacing it”…
I have found that if I pull it too tight, it makes the drum harder to turn. My old CDI has no bearings, so if I tighten it too tight, it binds the 2 pieces of the drum.
Greg