nacra 5.0 spinnaker

I have been updating a 1994 nacra 5.0 to a nacra 500 sport. I currently have the main, spinnaker and waiting on the sport jib(jib blocks are moving to a track on the front beam). I have the manual for the n500 spinnaker kit(thanks to Scott at Nacra) but it does not have any information on where to mount the spinnaker bale or block on the mast for the halyard.

I really do not want to have to experiment with the height. Does anyone have or know of an n500 to get measurements from? Any information would be greatly appreciated.

Thanks
Sorry dr - can't help you, but REALLY keen to hear about the upgrades and what they did for you. I have gone square top on my 5.0, but would LOVE more pointing ability if that is what the 500 jib kit gives you? Also, have a Taipan spinnaker that the PO had rigged, but would really like to see how it is done on a 500.
Thanks