Hi Bloome,
I also got one of the Euro sail sets from the German Championship in 2010. As far as the battens, I cut down the battens so that when fully inserted they were flush with the end of the batten pocket.
To cut the batten, find the length that you want, use a hacksaw with a fine tooth blade and cut halfway through the batten. The flip it over and cut from the other side. that helps to keep the batten from splintering. Another trick I have used when cutting fiberglass or carbon fiber is to wrap the area with masking tape and then cut through that.
Page 16 of this manual will help with the installation
http://www.hobie-cat.net/download/manuels/hc16_gb.pdfYou will also most likely need to add a 1" shackle to the connection of the main sail to the gooseneck.
Hope this all helps.
Doug