Headstay
Art,
All new furler installations should have a new headstay at the same time as the installation of the furler. This is due to several things, difficulty of dissasembly of furlers, potential age of existing headstay(may be nearing the end of its life), and that cutting the existing stay to put the furler together is problematic and will leave the headstay to short. Just looked at the profurl site, and the basic construction of the unit is similar to most other manufacturers units. Most riggers also will not install a new furler unless you get a new headstay at the same time as well. Ryan