I got Nike Blazers and they dont have any like heel area or achellies tendon protection since there high tops and go straight up and after a couple days my heel got a pretty bad blister, hurts like shit when i skate in those shoes. Is there anything I can buy, somthing that will last and put in the heel of the shoe so my heel and achellies tendon doesn't move and create a blister? I defenetly dont want to put these shoes to waste there brand new...