I just received the pair of new Sidi Vertigos I bought off of eBay. Now I normally wear a size 8.5 (Euro 42) but after putting these boots on, they kind of feel loose around the ankle. Would this be a bad thing? My toes are almost at the tip of the shoes with little room to spare so I'm not sure if I can go a size lower. Also, if I extend my foot like going on my tippy toes, I can feel my heel come off about an inch off the bottom of the boot. I got a great deal on these and would hate to list them on eBay again, but would it be a safe bet to order a pair of 41s off newenough to see if they fit then sell the 42s?