Cordyline Crisis !

DaveP ~ Thanks for the excellent pointers on cordyline care. My plant is a Torbay Dazzler, I will repot in new compost today and also ensure it is fed and watered as you advise.
On the winter storage - first year I placed it in a well lit frost free shed. I bound the leaves up tightly. The result was the plant leaves rotted - but managed to recover in the spring . For storage should I wait until the actual plant is bone-dry and then bind the leaves up very loosely - just to make storage room ?
I also have a red star cordyline - these as you say are a little hardier so I will store in a shelterd spot in the garden.