Well after careful checking, I have concluded that my 1987 35-3 also just has one Zerk fitting. On the aft side of the rudder tube about half way up. Since the rudder was out, I was able to feel all around inside the tube. Mine was dry as a bone, no grease anywhere except a little residue on the lower bearing. The rudder tube is a little larger than the bearing at the bottom and packing gland at the top and has about 12 inches of space that is 1/8" bigger all around that needs to be filled with grease with the shaft in. I can easily imagine it would take a couple of small tubes to fill that annular space and push some into the bearing. BUT if your rudder tube is intact and your top gland and bottom bearing are not too loose, you shouldn't be pumping too much more into that tiny area. Something might be up. Here is my packing gland with packing as it was when I removed it yesterday. As Dr Stephen Maturin in the novels would say, "It is the completest thing" I don't think I will mess with it. Three rings, staggered and in perfect shape.