My fry are still doing very well. I've only found one dead fry so far, doesn't mean I haven't lost more, I just haven't seen them.
Last night while siphoning out water (I use air line), one of the fry somehow got sucked up and fell on the paper towel I have in front of the tank while cleaning. Anyway, I very carefully touched him/her with my finger, and swished him/her back in the tank. The fry looked a little stunned at first, but then swam off, what a relief! Probably saying, "hey guys, guess what happened to me?"
When adding new water, I use the drip line method. That way the chemistry doesn't change very quickly. There is a size difference, but I've come to believe that is normal in spawns.