I need to clean and replace my flame sensor on my furnace I have a Jayco 29 BHS. 2004. I'm not able to gain access to it. Do I need to remove the stove or is their another way I only found 2 screws on the bottom of the oven but it still seems very tight. Living in my unit while finishing my house for over 18 months but it's starting to get cooler here in Michigan and would like to fry my furnace operational soon. Anyone please help.