Poor Melissa...you've really been toughing it out! I don't know how you've managed to get it down...I have trouble if I don't drink it fast enough and it starts to thicken a bit...which is why I like the whole husk because it doesn't gel up quite so fast. No way could I handle chunky!
If you go to the link I provided on Bentonite and scroll to the bottom of the page they have a link for preparing it. I think someone else here had success with using a hand mixer, too.