I have just begun baking bread. I've made my own starter and I am using Tartine Bread as my guide. The taste good very much like a sourdough, but I don't seem to get a good rise. I feed my starter every other day, the smell changes as described and there is definitely airation. Could it be the kneeding or I don't allow for a long enough rise or could I let it rise too long. If anyone has any suggestions it would be much appreciated..