Donnie,
I bought the Nautos kist as well, albeit it was not the pre-spliced version. It has worked out very well.
I mounted the hardware before I had the mast stepped when I first bought the boat. I didn't have the instructions you quote, but I mounted the upper block up where the forestay attached to the mast. It's proved to be a good functional location for me.
Remember to leave enough line to release the jacks once the mainsail is secured. I pull them down and slip them under the reefing hooks at the gooseneck then tighten and tie them off. This way they don't interfere with the cockpit cover.
Good luck with it. I just sold my boat, will miss her...
Bill Cheadle
#1622
Chien du Soleil