I am glad that you like the recipes that Len and I have come up with. If you think it took a long time to download them, just think how long it took to formulate them!
Don't know if it is necessary to agree on anything but, I can say that the recipes that we have posted are all tried and true. If you follow the exact recipe and use the techniques we have suggested, you will have success and you will be safe. Len and I have worked on these recipes over the last 4 or 5 years and in the case of the Gelbwurst recipe, gone through about 50 pounds of pork, perfecting the recipe. Besides our own enjoyment, our main motivating factor was to supply recipes that were exact and reproduceable at a price (free as you noticed) so that everyone could be successful. All of the recipes (unless otherwise credited) are recipes that were formulated by Len and I.
Everyone seems to be interested about fat content but there is much to be said about spiceing. You won't find much said on Sonoma Mountain webb site about spiceing but that is just because thats part of the art in the art of making sausages, the alchemy if you will. As to the fat, well, sausages are fat ...that is their nature.