Have had several problems with stretching of the elastic tension cord.
It stretches out so tension is not sufficient on the drum. Visually it
doesn’t appear damaged. Is there any rule of thumb of how often it
should be replaced ? Is there any source of a bulk purchase of similar
material. We have 15 boats now and purchasing from Radio Sailing is not
all that expensive, would be nice to just be able to have a large spool
of it for the club members to use.