hello, I have a 1987 24' Fleetwood Southwind with an Onan Emerald1 Gen. I am about to pull my hair out trying to figure out how to change such a simple thing as the air filter on the generator. It has the 2 thick sheet metal walls on both sides, I cannot get to the bolts that hold them on because they are mounted on the inside, no clearance to get to the 1 bolt that holds the filter cover on, the filter cover has to slide to the right to come off, the filter cover would not be able to go right far enough to remove even if I got the bolt off, no clearance, What a design, How do I get to it? Does the generator have to be removed to change an air cleaner? I'm don't want to mess anything up. thanks for any help.