RE: Rudder Packing
Open it up and check out the size. Before you do, buy a pack or a couple of different sizes. It isn't expensive.
I had a dribble in my shaft packing, so I bought a couple of sizes, guessing based on the external dimensions of the collar. When I had it open, it was much larger than the largest size I had, so I tighened it up and went back to the store. I also had a dribble from a rudder gland, and since it was the same externally as the shaft, I thought I had the right packing. Wrong. It was much smaller than the smallest I had seen. I pulled some of the larger packing apart and wrapped that around the post, did it up and the dribble stopped. Every time I check it, there is still no leak, now at least 4 years on.
So try it. Let us know what you find.