After hanging flap, found out that the outboard closeout which acts as a ramp/guide was not exactly flat. This was the same as on our starboard wing.
If there is some aileron/flap gap when the flap is in the up position, when the flap is dropped and held outboard, the flap will contact the aileron.
Time for some FILL, FILL, FILL to make it flat.
Y9-09-20