I had problems with overheating in the flow through bin. I finally found someone who has been a commercial wormer for 2 generations, he told to stop fluffing and mixing the contents of the bin. He also said do not put the food on top, he said that in nature the worms live on top and move sideways to get the food. In nature you do not get large amounts of food coming down in one big dump.
I collect the food scraps in a small bucket, place a layer of shredded paper and cardboard on the bottom, then each day i put a layer of shredded paper/cardboard over that days scraps, at the end of the week I add just enough water to make it all moist but not floating in water. I leave it sit for 3 days to a week (I have 2 collection buckets).
I add it to the worm bin by gently pulling the contents of the top half of the worm bin to one side (I do this very slowly and try not to disturb the worms too much) and dumping the contents of the buckets in the vacant area.
I it takes about 3 days for the worms to move over and start on the new contents of the worm bin.

I have not had heating problems using this method.
My worms seem a lot happier now that I have stopped disturbing them all the time to fluff and check on them.

I do not disturb or fluff the bottom half of the worm bin at all, it gradually falls through to the bottom section of the worm bin for collection. There is always a few worms in the collection section, I just toss them back in when I go through it. When the bin was overheating they seemed to be escaping down there, they did not move so much when I picked them up, now they are much more active when I catch them, I am assuming that this means that they are healthier.

I agree w/ this method, and think that weekly feedings are prudent, as other things are checked, moisture, worm activity, etc. I mark the bin with a piece of plastic laying on the surface, in the shape of an arrow over the food. When I go to feed, I lift the arrow and see if the food is gone, are worms there, etc. If it looks good, I dig where the arrow points, drop food, bury, and move the arrow.
I freeze all the food I can, it's easy here in the winter, and it reduces fruit fly eggs and breaks the food down. I thaw it to feed.

Does anyone have experience with pre-rotting the food? I was mixing it up in a big barrel, w/ water, then straining the water out and feeding this pre-innoculated bacteria soup. The only trouble I had was a tendency to get into fermentation, they don't like alchohol products- ideas?