So, I started to make my own juice. Obviously I'm running into some problems. One big one is that my flavor in a batch is inconsistent. The first half of the batch is sweet and nice, but once I get down to the end of one bottle, the flavor is different and a bit more bitter. Why is this? Am I not steeping it long enough. My steeping technique is a warm water bath for 2 hours, right after I make it. And then I stow it away in a dark place for 3-4 days. One of my newest batches had a good flavor right when I opened it up. But once I got halfway through it... I couldn't even taste the fruity flavor. What am I doin wrong?