Turnbuckle
Glen,Alan description of your problem could not be more exact, however for reference if you want to look for the Turnbuckle, assuming you have a below deck mounted Hood 810 furler (or similar unit), here is the way to have access to it.Remember it is easier done with no head sail on the furler. Part number refer to drawing on the related link.1.Remove the tack socket Hex screw Part # 32.Remove Forward tack socket. Part # 2 Straight pull.3.While holding the aluminium furler extrusion with one hand, Remove aft tack socket Part # 1. Let the extrusion go slowly. The extrusion will move downward about 6 inches with the tip resting on the turnbuckle.While you are doing so, pull the extrusion back up and check the lower part of the aluminium extrusion to make sure it is in good shape. It is a common occurence on these units that the aluminiun will crack around the holes close to the bottom of the extrusion.4. Underneat the furler assembly, in the anchor locker, disconect the pin trough the hole in Part # 16This is usually considered the difficult part in this operation. 5.Attach your jib haylard to the jib D Shakle part # 56.Pull Halyard and lift the complete furler assembly to expose the turnbuckle.To reassemble do the reverse procedure, the tricky part will be to put back in place the pin in the lower furler drum. The trick is to make sure the cavity in the centery clamp assembly Part # 18 is located exactly in line with the pin location. Some people told me it took them one hour to put the pin back in place. If everything is line up properly it is a 2 minutes job.Look at this web site for complete description of the parts, parts numbers and line drawing.This complete procedure should not take more than 10 minutes. Sounds complicated but it is easy.Good luck.