Does anyone know where I can buy some decent convertable nylon hiking pants in larger sizes? I am 6'3" 320 lbs with a 46 inch waist and 32 inch inseam. I have looked around everywhere (campmor, rei, sierratradingpost, gearx, etc..) and no one seems to sell hiking wear for big and tall folks. Walmart used to sell some board shorts that worked very well for summer hiking, but I don't really have anything to wear for colder weather backpacking. Was just wondering if anyone knew of a "big and tall" hiking store or something. Thanks!