WW Flour Tortillas?

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A while back I tried making some flour tortillas with white WW flour.
They came out very stiff. I am wondering if I should try mixing in some soft wheat to make them less stiff.
My ideal tortilla would by puffy, soft and slightly elastic.

Is there any oil in your tortilla recipe?  I make whole wheat (half wheat actually) tortillas by substituting whole wheat for half of the flour in a regular white recipe.  Maybe don't cook them so long?  I put them in a towel-lined basket straight off the griddle, then fold the towel over them.  It helps keep them warm and the steam keeps them soft.