Hi,
you will note that the wing is set at positive incidence for radios in use back then,non porportional,ruddwr only.only way to get the plane to lift off the ground.set the wing to 0 degrees as well as the thrust on the engines.3-5 degrees of out thrust on each engine will be bene ficial also.as far as the wing ribs go there is a program called profli that can produce the wing ribs for you if you know the airfoil.anaca 2415 should be close to the original if you do not know.print one up at the size you have of the original and see if it matches.with the weight of this plane you are going to need heavy duty retracts with 3/16 music wire struts.spring airs would be the easiest especially firewall mounted mains that retract rearwards like a non steering nose gear.rhom used to offer these for the royal p-38 and b-25 kits.