Ok.. we need pics of this engine. Just one or two from in front and general pic. Then we'll be able to help further than guessing at which parts you have.
1. If you hear it.. fix it.
2. Pull the starter back out and look at the teeth on the flex plate.. turn the flex from teh crank bolt or at the flex with a screwdriver to look at it all the way around, how many teeth are missing?
3. I'm logging into photobucket..anyone that's been in my pb knows it can take a min
4. not usually. Don't trust them. Do it yourself and usually they won't check rack to subframe bolts.