Prebuy on airframe corrosion.

[wslade2]

Under the battery box all the way down to cowl flap including muffler support. In fact muffler supports both sides. Skin near and downwind from battery region and vent.

Wing roots under the fairings where wing joins fuselage. Those fairings poor at keeping out water. Includes wing attachment hardware. Struts can be overlooked (due to fair number of screws to completely expose those; also the fairings at the ends can be difficult to remove-mine we’re even riveted in place impeding inspection) and check those.

Bottom of rudder in case lower rudder tips poorly drain and hold water.