Katie, a 35 minute processing time is TOO long for salsa- the reason your canned tomatoes need that long is because you don’t add a cup of vinegar. Do a quick Google search to find that all the reputable salsa recipes call for 15 minute processing time (extension services, and the Ball Blue Book are two)- even for the recipes that have tomato paste added. I know you said it will make you feel better to go longer, but there are good reasons not to: energy costs and over-cooking the salsa are two good ones.
I added a tea spoon of fine ground hot pepper. now thats the slight hot I like and no tomato paste. I like it wet …Great recipe. the first time I ever made salsa and I am glad I found the perfect recipe.. on top of it all. its just like a recipe of a so called semi friend. that had his own recipe I liked and he wouldnt give it up. well ..he can bite this. now!! I got it. if not better ..ha ha !! you and your grand mother knew your stuff… Thanks !!