A problem can occur with the standard furler where the furling line wraps itself outside the stainless steel rope guide. There is a 3mm gap above this guide that can open a bit with use. I put on a bigger line a few years ago and fixed a small piece of plastic to the guide to close the gap. With the genoa needing a lot of turns on the furler especially if it is windy mine ended up in a big jam recently with the genoa half out I could not retract it or open it out fully....
Anyway my mod to solve this problem is a small piece of scrap 22mm plastic water pipe. Cut to the exact length and softened in some boiling water it is fitted over the stainless steel rope guide. Cut to a length where there is no visible gap, it works perfectly. Cost of repair nil...
