Had my Gato refitted with the same cut-out con. Thought it improved my ability to use the AA guns greatly. Like the new look, and am having fun shooting down pesky planes as well.
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"No matter where you travel, when you meet a guy who's been...
There's an instant kind of friendship 'cause we're brothers of the 'phin."
- Robert Reed, G.W. Carver (SSBN-656)