No Sugar Grape Jelly

I made homemade Jelly for the first time in December 2009. I added something like 6 cups of grape juice and 5 cups of sugar. It was really good but tons of sugar. Today I tried the No sugar needed pectin. I just used 4 cups of juice and the pectin. It is very sour. I am not sure if Danny is going to like it. I will have to keep trying to find a recipe that does not have so much sugar but just enough to not be sour. We haven't tried it out on a peanut butter and sandwich yet. It my still be good there!