Positioning broken?

hi I’ve had to change lines 78 in form-billing.php

$postcodeFieldKey =  'billing_postcode';
$postcodeFieldKey =  'postcode';

and line 71 in form-shipping.php

$postcodeFieldKey =  'shopping_postcode';
$postcodeFieldKey =  'postcode';

to be able to position the plugin within woo-commerce (otherwise it defaults to the bottom of the form)

This change then removes the required asterisks from the postcode field.

I have disabled all plugins and themes before trying this.

cheers