I just bought my first pellet stove, its 2 years old. I have a straight horizantal run about 2 feet long out the back. When I watch the outside vent hot ashes are flying out alot. When its on high does it everytime pellets drop down from the hopper. On low not as bad but still some. Now is that normal I called the "toll free number" and they said thats what it does, Im just affriad of burning down the grass and the house. Its 18 inchs off the ground and 13 inchs away from the outside wall. So is that what its suppose to do. Thank you in advance Tory