Can I apply Flat Rate to one Category & Zone, Per Weight for all other Categories?

[BlackOrchidCouture]

I sure hope I'm not driving you crazy.....

Ok, I took that out of usps.php AND flat.php, and for now I'm working on Flat.

I feel like I'm onto something, but may have the parentheses wrong, something is wrong, but I'm starting to understand this a bit!

I realized I had to give flat.php more instructions so it will really know when to use it and when to not:

global $cart;

// check for manufacturer id alchemy
if (IS_ADMIN_FLAG == false) {
          $chk_manufacturer = $_SESSION['cart']->in_cart_check('manufacturers_id','1');
      }

// disable if no alchemy products in cart
      
      if ((IS_ADMIN_FLAG == false && $_SESSION['cart']->in_cart_check('manufacturers_id','1') == 0)) {
          // hide FLAT
          $this->enabled = false;
      } 

// disable if there are weighted products
if ((IS_ADMIN_FLAG == false && $_SESSION['cart']->in_cart_check('products_weight') > 0)) {
          // hide FLAT
          $this->enabled = false;
      } 

// enable if total product weight is 0 AND there are alchemy products
if ((IS_ADMIN_FLAG == false && $_SESSION['cart']->in_cart_check('products_weight') == 0)) && (('manufacturers_id','1') > 0)) {
          // show FLAT
          $this->enabled = true;
      }