Because the lower section of the mast (below the spreaders) is damaged. I'm removing the comptip to put on another mast This is for an 18sx, so the lower portion is longer than a standard 18 mast. I have a solid aluminum 18 mast that I can cut down to add the comptip to which will still allow me to run the 18sx sail. The 18sx is my beach boat (of course it has an F18 spinnaker).