Does anyone know if I can take the back panel off a St Croix Hastings while it is fired up. I would assume so because it just looks like 6 screws or so and I can lift it over the exhaust pipe. Just wanted somones opinion before I tried it since I just got this stove Tues. It seems like there is a vibration sound when it is fired up like a loose screw rubing against metal. When I shut the stove off, it immediately goes away as the stove does its shut off routine. I have no idea what it could be. I know this is a hard one to explain/diagnose so I guess I was just going to start by pulling the back panel off to look for anything obvious.