Hi everyone just to close this one, thanks for the excellent advice, also to Ray, George, Simon, Mike at CSC, tried the new ropes yesterday, total transformation, still a few jobs to do (traveller, jibsheet) but we're getting there!

Thanks once again.

AR

Many thanks chaps........wil be replacing the main halyard this am....have gone for 9mm on the mainsheet!
AR

I'm trying to find out the correct spec for replacing some of the running rigging. I have an older Dart 15 with really grim mainsheet, jibsheet and mainsail halyard. The latter two are really thick - way thicker than on the other Darts/Sprints I've seen. Can anyone help me please with suggestions of...