I have a Castle Serenity pellet stove in the basement of my house used for supplemental heat. Yesterday I went to run it for the first time all season and got an “Ignite fail” error code twice, stove just dropped pellets until the burn pot was full. I called tech support and they believe the igniter crapped out so I ordered one yesterday. How DIY is installing the new one? Don’t have a local stove service and was told January was the earliest someone could come out...