My tuning guide is on the Division 12 web site
http://www.hobie-div12.org/
click on Hobie 16 Rigging Tips
The pins at the mast base are just for getting the mast up and down. It doesn’t mater too much what hole you put the pin in. Be sure to take the pin out when you go sailing so the mast can rotate.
You should probably pin the shrouds all the way at the bottom. I think the older boats had longer shrouds.
Also check out www.thebeachcats.com there are tons of how to articles about getting an older 16 back into good sailing shape.
Delamination Repair
How to Epoxy the Frame
Tiller Bar Upgrades
Rudder Adjustment
Parts Drawings from the Catalogue