Sounds like the shoes don't fit. Double leather sole is less flexible and a little heel slippage is the norm in new shoes with double leather and will end when the double leather breaks in. But you are using tongue pads just to have the shoes stay on your feet. The shoes are too big. You should try 1/2 size smaller. Or, if the length is good, one width more narrow.
10/17/14 at 11:54pm