Sheldon on chainring bolts:
"Tighten the stack bolts in a regular pattern, like the lug nuts on a car wheel. My standard pattern is to start by tightening the bolt opposite the crank, then move clockwise 2 bolts (144 degrees), tighten that one, clockwise 2 more, and so on. Never tighten two neighboring bolts in a row. You may prefer to go counterclockwise, but try to get in the habit of always starting at the same place and always going the same way. This reduces the chances of accidentally missing a bolt."
Once you get your chainring issues sorted out, if you're still having a problem throwing the chain, I'd suggest you investigate your chainline. As in, how straight is it? Pretty critical tweak on a fixed-gear.