Sorry to hear those didn't work out for you, but I believe most if not all Tankers are on the Barrie last and not the Trubalance. Epaulet recently made a Natural Chromexcel Tanker boot and that was on the Trubalance but Leffot and Context have their Tanker boots on the Barrie.
Thanks man. Actually, they fit well despite the size marking as I wrote. And yes, the Tankers that I was comparing them to were the Natty CXL from Epaulet. You been peeking in my closet?