I inspected my sheaves yesterday, I was surprised to see that there was not a grove from the wire. It actually had a nice radius and smooth. Secondly that that the second set,lower Jib and spinakker sheaves were never used. So I think I will swap them and use the new as primary and the old others as the alternates. Now I have to choose the line. I will place a second jib and spinnaker halyards at this time. I find I do many more jib changes than spinnaker peels. Speaking to the second Spin halyard question.( No OD in my area, Detroit)