Some of my tomatoes have something I have never seen before. They are red, and they come off the vine easily, but there are spots that I see when I peel them for canning that aren't ripe. They are hard and small and green. Some of the places on the tomatoe are a bit yellow in color. At first I thought it was sunburn, but it isn't just on the shoulders, and the fruit is coming from the center of the vine, where they are pretty well shaded. Does anyone have any idea what this is, and if I can prevent it? Thanks! holly zone 5 zacwinic@mail.netnitco.net