Omg, omg, Critterina, thank you so much! I actually have a degree in biochemistry from back in the day. But I have been so brainfogged for so long that I didn't even remember that the thing to do was to look at the cycle, and look at where my snps are, and figure out which direction reactions would be pushed. And I probably never would have thought of it, or not for years, if not for you. I used to frickin' tutor this stuff! I will print out your post, and print out the chart of the cycle, since flipping back and forth on the computer isn't working for me, and study them together. Thank you. Besides your enormous help here, you have given me back a piece of my life.