We have an Englander pellet stove about 6 yrs old. We've been using it the past few months, came with the house we bought. Recently, the ash is not going into the ash pan and there is a lot of build up in the stove which leads to frequent cleaning. We scrape the burn pot and clear all ash very couple of days. Anyone know why the ash is not going into the ash pan or has anyone had the same problem?