There is strengthening plate on the outside of the inner wing which is spot welded in place over the years the coat of gunk has dried hard and cracked and allowed water to invade the space between, that has caused rusting from the inside out creating a large scab Approx 50 mm x 35 mm to fall away from the inner wing, the plate doesn't look that bad on the other side so may not need replacing. the scab has to be cleaned back to good metal. i could put in a patch but that leave a space ready and waiting for more water. Is it possible to fill the scab with weld using the right technique.
Bert
Bert