They look fine. I didn't follow the whole yeast sugar issue, but whatever. What you are seeing in that leave is a bit of history. Plants aren't so good at correcting past mistakes if you know what I mean. Chop off a branch and it's not likely to grow back. Cut a leaf in half and it wont return. So knowing that, yes it's apparent that something went wrong early on. It's possible the sugar yeast issue did produce this effect, but they have long gotten over it and they look to be producing nice growth from here on. If the newest growth doesn't look normal then something else is going wrong. I'm not seeing that though. Those leaves will always look like that, but likely you fixed the issue and new leaves will look normal.