Juice,

I'll send you the exact dimensions I used, just give me a few minutes to finish this drawing.

Drilling holes in the leading edge will not weaken the structure. Most of the load bearing is done by the center section. I have always drilled 3 holes in the leading edge of my Corsairs with no problems. You don't have to go all the way through, but I do anyway. Roll some 1/64" ply our some stiff paper over a dowel for the proper shape, put a back on it, stick a smaller dowel for the machine gun in that and glue the whole thing in the wing hole. You'll see me do mine on my web site.

Good luck with the door contraption! haha I want to see your site updated with some door working videos!

Later,

Luke