I agree with SheriffJoe, the gore-tex layer may be the problem in your boot. It's a little late to send them back, but I'm curious. Why wouldn't you stick with Lowa for the fit, but in a newer model? If they leak, then you could return them.
It took me years to finally find a good fit for my size 14s, but the Lowas are the best for me by far. I started with the high-top GTX Evos, and liked them so much I later bought the lower height Tibets. I finally got the Renegades which wears more like a high top sneaker, very light and comfortable. Three completely different boots for different uses and conditions, but all fit great, and all have been waterproof to date.
Good Luck!
