I'm building one of these for Tiny Shida's mobile. What's confusing me is in the wings. I had it in my mind that all of the 303s were accommodated
within the wings. I thought it was routine to dope a square of red canvas over the ports to keep the guns from freezing. I remember seeing these little squares flicking around once the guns fire, however the Tamiya model depicts two of the muzzles protruding, two of them quite a bit. You certainly could not canvas over these:

Apologies for the poor photo.
Is this correct for the Mark I? If I need to modify it I have to do it before I join the wing halves together.