I'm sailing with Hans today. I will ask him about stock stay lengths for a 5.0. If you still have troubles, contact Stu Smith at Ellie's Sailing Shop in Clearwater. He can make custom rigging for less than $20 each if you use thimble ends. He can make or fix anything. He probably has the lenghts but we have some 5.0's here to copy if he doesn't. Write me offline.