I have had a quadrafire castille for years. It has been more or less trouble free. Last winter my children lived in my house while I was in other places; I came back last month; fired up the stove and all went fine. After a day I went to pull out the knob that drops the ashes/clinkers into the box. It would not open. It is rusted shut and I can not get it to open. (have tried wd 40; scraping with various tools to remove rust, etc. Used a fairly large water pump pliers, but no joy. Thought I might remove the burn pot, but the bolts will not loosen and I fear I will snap them (I guess I could do that, drill out the remainder and try to free things up. Any thoughts Bill McKay in Massachusetts where it is getting boring waiting for things to cool completely and then bringing in the vacuum cleaner to clean it out every day.