Did you find something that works for you? I am currently trying to find a solution myself.

I would love to hear what your resolution was.  I am having the same issue trying to figure this out.

@PaulNewton  Just wanted to make sure you saw my additional questions above 

Thank you so much for the fast reply! I will take a look at mechanic in a bit - thanks for the info. Regarding your theme modification I need more clarity...   So, for example, let's say I have a product listed as a tshirt with a heart on it.  I offe...

I have a tshirt pressing business and like to print per order rather than stock finished product.  So, I have an inventory of blanks that can be applied to any of the products I list.  I make the thsirts from transfers that either I've made or purcha...