Thanks guys. Being both 1930's designs (Gloster Gladiator 1934, Polikarpov I-5 1930), it's not unusual to see common features in both aircraft.
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So fuselage is now joined up and lower wing attached. It did take several sessions of sanding and test fitting to get the lower wing to fit.
Still a minor gap to fill in at the front, and some slight sanding required on the leading edge of the wing root section. I also cut out the top and bottom sections of the engine intake and replaced with sheet plastic for a more streamlined finish. Inset photo shows it all cleaned up and sanded.
The tail unit was also problematic. I suppose ICM took a different route to ensure both elevators are level by making them one unit, instead of the usual two separate pieces and having the rudder/tail already part of the fuselage. Their method leaves a gap between the tail and top surface of the elevators, or at least my kit did.
I believe most modelers would do the simple thing and just fill in with putty, but there is also another gap of missing plastic along the hinge of the rudder (indicated by the two red arrows),- the tail surface here should be continuous. I decided to be a bit more adventurous and try and drop the tail down to fill that unwanted void. I also extended the back end of the tail with some strips of sheet plastic.
Still a bit of a gap ... honestly, that was a lot of extra work to save on some putty.
regards,
Jack