Yes, it can get complicated, especially with an attic antenna and trees. It is going to take a few tests, and the results of those tests will determine what to try next. You are doing fine and we will try to help you as best we can in this "remote control" way.
If you are willing to give me your address in a Private Message, I can see what the trees look like in an aerial view and add the green signal lines. It would look something like this:
Vertical view:
Bird's eye view:
You can do your own using the tvfool interactive map browser by moving the cursor (drag and drop) to your antenna location.
http://www.tvfool.com/index.php?opti...pper&Itemid=90
Do you get WVEC 13 ABC OK?