Missiles cowl repair needs help

Thought I would let all know how this turned out,
The torch & ice method did no good, probably because of what caused the condition in the first place.
So last week I cut out the panel for the third time, and this time I went back with 16gauge metal. Again taking real care not to let the welding heat build up or migrate into the middle of the piece with cold water and a sponge after each small section of welding.
All is well ,I will have to use a thin coat of bondo at the upper seam by the windshield to fair out the transition, but otherwise it looks good.
Andrew