Thanks guys. Undercarriage and gear doors are now on and all the engine cowl weights have been added (5c coins putty!). I've had to cut out small strips of plastic card to represent the windows in the down position. The clear parts for these windows are quite crap as they don't fit between the two canopy sections being a couple of mm too small. It looks better this way as I'm modelling the top canopy in the open position. Next step is to attach the bombs and do a bit of touch up painting.
They're portrayed in the open position Andy, slotted down in the fuselage, like car windows. The upper frame (painted red) protrudes, as shown, and normally has the legend 'No Step', to prevent damage when entering or exiting the cockpit.
That's a really nice looking model. The plan view really captures the unique design of the P-38; some real vision from the design team when it's compared with more conventionally designed aircraft of the period.