You could check with Rudy at D&R, he has many of the O'Day Manuals. I'm trying to make a DS I manual by modifying my DS II manual, but that is a work in progress. You may be able to get most of your questions answered by checking out the Day Sailer Class Association Web-site
www.daysailer.org
Most of the info is related to the DS I, since that is the more popular model for racing. There are quite a few DSA members that frequent this forum, many have DS I models.
Rod Johnson, "SUNBIRD" (rjohnson24-at-juno.com)