Just read all of your first post... If you have access to woods, I'd find all the dead decaying logs I could find and dig that up along with the top 2" of soil immediately under and close to it. should be very loamy. Mix in some sand for good drainage. And a little composted manure and you should be good to go. Whatever you do, do not dig down into the natural dirt under your bed and remove it. You will create a bowl effect-especially in clay soils. All you need to do is mix what you bring in with the top 4~6" of the natural dirt present. This will create a transition zone so the roots will travel deep instead of hitting a different soil layer and stopping. Till it ONCE....the first time, and never till it again. Use a garden fork.