I have a CDI furler (if that's what you have), and it shouldn't be too hard to replace. When you take the drum apart, be especially aware of the multiple washers, and where they are at the base. It's important to get them back together correctly, and a little awkward sometimes - but it can be easy to get it together and have the washers wrong or missing. You should be able to buy a new forestay at Catalina Direct. Make sure to check the tension on the forestay after getting it back up. Re-winding the furling line on the drum can be a little tricky, but basically all that needs to be done is to fully wrap and furl the sail, and then attach the line to the furler drum. When you draw the sail unfurled with the sheet, the drum will rotate and draw/wrap in the roller furler line on the drum. If I remember correctly, if you over-wrap the sail by a few turns (before loading the furling line on the drum), it will ultimately give you the extra furling line on the drum needed to over-wrap the sheet a few turns around the furled sail, when you are drawing it in with the furling line. Don't forget to put cotter pins in the turnbuckle screws, or the furler can undo the turnbuckle when rotating. Good luck that you saw that ahead of time.