Halfway through the preparations for installing a CDI roller furling system, I found that while the model FF-7 was suitable for a 30 ft sailboat, and the forestay was 1/4 in. in diameter and the turnbuckle at the deck fitting was 3/8 in-- all of which were within the required tolerances, the barrel of the open body turnbuckle was not 1/2 in. or less but is 9/16 or 5/8. As a result, the CDI foil that slides over the forestay( which is what makes it so easy to install), will not slide over the turn buckle, and moreover, will not avoid touching the inside of the foil. At first I thought that I either have to get a new foil ($$$$$) or a new headstay ($$$), but I can't find anyone who has a turnbuckle swaged onto a 1/4" 7x19 wire that has a 1/2" turnbuckle. I'm reluctant to use smaller wire for the forestay because it was designed for 1/4". My last resort would be to "end-for-end" the existing forestay because the upper end does not have a turnbuckle but only a t-bar that sits in a strap that bolts to the fitting on the mast. While that means a trip up the mast to adjust the tension on the forestay, I rarely find it necessary to make that adjustment. Does anyone out there have any experience with CDI's or other roller furlers with similar problems? If so, can you give me your ideas? Many thanks.