First time poster here. We got a Ravelli Roma insert 3 years ago. Unfortunately our burn pot keeps cracking. The first one lasted 1.5 years (9 months of use). We bought another one that lasted 3 months (should this have been covered under warranty?). The next 2 only lasted 2 months. The dealer came and changed the settings on our stove to no avail. The pellets we use (Northern Warmth) don't leave a sticky residue or much ash and we vacuum the burn pot and clear out the holes every day. Has anyone else experienced this same issue?