I'm a little late for the party but I have an '83 Outer Reef 26. It's outside covered up on the trailer. I'll be right back......................
You may have your issue resolved by now but I see a flange on the back of the keel through which the prop shaft passes. Two bolts, one on top, one on bottom.
Bolts through the bottom of the keel , ahead of the packing glad, hold the bottom rudder support arm.
If your avatar is the model you have, mine is different. Mine is the "tug" with cabin, dinette, head, etc..
I have some original brochures, and stuff, including the original electric schematic for my model. If I can be of any help..........