Turnip -
Here are a few key pieces that have helped me avoid worm bin pests. I agree there are many ways to go about it, but this is what has worked for me.
* Keep a 6" layer of completely dry bedding material on top of the moist "working" layer of the bin. The Bedding I use is a mixture of shredded brown paper bags, cardboard, and newspaper plus some dry leaves. When you feed, push this dry layer aside, bury your food under a thin layer of the moist material that's under your dry bedding, then replace the dry bedding on top.
* Keep the lid off your bin so that your top layer of bedding stays dry. If you put the lid on, the moisture will even out much like it does in the cure jar.
* Keep a couple quart-sized yogurt containers in the freezer. As you generate food waste, put it in the yogurt containers in the freezer. When it's full, take it out and let it thaw (I pull it out in the morning before work, then feed when I get home). This freeze/thaw cycle kills any eggs that may have been on your fruit peels, etc, and softens things up. The worms process pre-frozen food MUCH quicker, which really helps prevent pests.
*Periodically (about once a month), I add some neem, crab meal, and mosquito dunk (about 1 TBSP of each). I mash them to a powder with my mortar and pestle, sprinkle underneath the dry bedding layer, and scratch it in a little with my fingers.
After you're bin has been up and running for a while you should start seeing various mites show up. My bins now support healthy populations of both predatory (hypoaspis miles; brown/tan, fast-moving) and non-predatory (brown, red, white, or tan; slow-moving) mites. The predatory mites graze on the non-predatory mites until some unlucky pest shows up. You will not find any harmful mites in your worm bin (mites that eat plants seek out plants, not decaying organic material).
Anyway, this is what works for me in my Rubbermaid bins. Give it a shot and let us know how it goes.