Hi All. I'm trying to replace the ignition modules (coils/spark plug wires) on my GT2554. Unfortunately, the owners guide gives NO assistance in how to access those. It appears that I need to remove the plastic cover on the back of the engine, but one of the screws holding that cover on is strategically blocked by the frame. Do I really have to lift the entire engine block to remove the plastic cover and get to the coils, or is there another way at them? Any advice would be appreciated.