I have the same unit as Ron
I have the FF3-H26 like Ron's installed on my H26. CDI produced this unit as the fractional rig on our boat requires the smaller luff extension, but has to clear the bigger forestay and toggle. The installation instructions have you shorten the forestay 4-3/8 inches. If they did not do this, the drum won't clear the deck. The link plates then install between the bottom of the drum and the tack fitting. There is some adjustement by pulling the pin and sliding the black drum up out of the metal housing. This will allow you to take up on the turnbuckle for the forestay. If your metal housing is hitting the deck, you might want to check this. The foil should be fairly taught. If it is real loose and floppy, you will end up with bad sail shape and some nasty weather helm. Don't forget to put cotter pins in when you are done. The CDI rep at the boat show told me a horror story about someone leaving these out and the turnbuckles loosened and seperated over time.Once you tune it and figure it out, the CDI unit is pretty bulletproof. Good Luck.Mike PajewskiH26 "Loon"