I'm just seeking simple advice from any boot guru's. I bought a pair of Meindl walking boots a few months ago, and to be brief they're cutting the friggin heels off of me. They felt a really good fit in the shop and gave me no bother at all when I was mincing about the house in them prior to taking them out (on the assumption that if they weren't quite right they would be in a fit state to return!). However the first time I hit the hills in them, my heels were cut to ribbons. I've worn them a couple of times since with the same result. I've tried wearing my normal walking socks, with army socks, two pairs of thin socks, vaseline rubbed into my feet, feet taped up. No joy however. I've worn dozens of different boots over the years and never had this problem. They're a great fit, they're just rough on my poor heels. Any advice appreciated.