Bought this tent, the Discovery 4, 2 springs ago.  Used 1 summer successfully no issues.  Very happy.  Only ever used for front country camping.   Second season of use, the fly ripped on the stitched seam.  Not impressed.  Tried contacting hotcore through their site, more than once, no response.  Have been waiting for over 6 months. So much for limited lifetime warranty. Won't spend another dime on their products. Waste of money.  Buyer beware!