Disconnect the tiller extension. There should be a heat shrink wrap over the universal and extension, remove. Push the pin out and pull out the universal. Cut the extension to the length you want and put back together.
Agree with Beldar.
One nice thing about the Sunfish class is people willing to share with others. I go to different regattas and always ask questions from the good sailors.
The fast people have really good boat speed which comes with practice.
The lower screw is important as it holds the lower bracket. You need the upper and lower brackets to allow the rudder to turn. Take something small object and reach in the hole to see if the block is still there. If the block is there for a temp fix try jb weld. Fill the hole put the bracket and...
The standard rigging puts the load of the rig on the fairlead and cleat. On older boats with wood backers this has caused failures. Also, with standard rigging the mast is forced into the mast step which has caused failures and if the mast cap is missing is it like a router bit. I...