I anticipated that there might be trouble with the spinnaker halyard getting fouled with the upper block (plastic head of foil) of the CDI furler so I added more distance from the top of the forestay to the block-about 7". One recommendation on the MSOG site showed this dimension as 4.5". The luff hoist of my genoa was 20' - 8" as opposed to the 21'-6" shown. At 7" spacing I still have to run both lines from the spinnaker halyard swivel block well around behind the spreaders and tie them off so that they do not interfere with the upper furler block when it rotates during the furling operation. The spinnaker halyard is still usable; if after the headsail is furled, I walk the halyard around the spreader and attach the shackle to the head of the spinnaker. Not too efficient and rather unsightly. Is there something I am missing or have others had this same problem? Note: the swivel block is on the upper forward end of the chicken-head fitting-as I recall, several inches above where the forestay pins to the chicken-head. Any suggestions? Steve <>< _/) M17 #263 Glendale, AZ