I replaced my horn cleats with spinlocks per this forum and instalation went well couple of clitches but they seem secure. Driveway sailing I have noticed you really got to flick the sheet to get it to release. My next project was the clam cleat for the main halyard it was always slipping out. After going to my local dealer they convinced me to replace my main halyard(original) with new. 63'of 5/16" I also switched the clam cleat with one of the others that didn't get used as much. Has anyone replaced there halyard ? I didn't realize the original halyard was spliced(loop) for the shackle. I will tie the shackle with a bolin can I still raise the main to the maxium height I need every bit to get it tight.