Some more thoughts on weights...
Unlike most I have straddled many camps within a wide world of model making and there are things that the well-seasoned modeller of one camp takes for granted as common sense that seldom occur to well-seasoned modellers in other camps.
One of the things I've done before is design, build and fly radio controlled aeroplanes. Like real ones, they have to balance or they don't fly. Every pilot/builder of flying models knows that the correct way to balance a model is to lighten the tail, not fill the front end with lead. Doing the latter results in the total weight going through the roof, the power to weight ratio dropping and the wing loading increasing. The somewhat dimmer aeromodeller tried to offset bad building by fitting bigger engines, but that does nothing to help the high wing loading and high stall (and therefore takeoff and landing) speeds.
To arm myself with some data (me coming back to my Engineering roots here) I have inspected the rear fuselage and tail parts from the kit. These are very substantial mouldings and must be close to 2mm thick everywhere. Ignoring the wings for now, I taped the fuselage halves and tailplanes & elevators together and balanced the fuselage on the point where the main wheels coincide. The tailplanes have relatively massive locating tongues which overlap inside the fuselage.
Even like this with interior parts missing and no wings, the tail is weighing over 90 grams on the scales:
So why am I making such a fuss about the thickness of plastic back there? Because Engineering, that's why...
Here are the moments about the Centre of Gravity (which needs to be at or ahead of the main wheels for this thing not to sit on its tail striker)
The scale of the drawing is irrelevant because the moment arms only need to be in proportion with each other, not true to life - the results are the same regardless of the scale.
The moment about the CoG at the tail (which I have labelled T and which is where most of the excess beef in the tail planes, elevators, fin and rudder are - there is more redundant weight ahead and behind) is the the mass on the scales times the distance from the CoG.
The mass needed either immediately behind the cockpit (which I really don't want to do) to balance this out with only half the leverage (48mm ahead of the wheels) is as near-as-damn-it double, or 179g which needs to be considered an underestimate because paint, guns, some PE in the aft compartment etc is going to tip this a little further aft.
Point B above the front lower turret is worse still needing 210g placed there to offset the tail's moment.
The moral of the story is that for every 1 gram of redundant mass I can Dremel out of the back end of this thing, I save the need for an absolute minimum of 2 grams of counter balance up front which means the finished model is 3 grams lighter than it would have been had I left the tail as-is. If I am to have any chance of getting this thing to sit on its nose wheel without spoiling the interior I have to do this, and the main undercarriage will thank me later when I do.
With the nose weight already stuck to the cockpit floor inserted into the fuselage, the same experiment on the scales still shows a residual weight of 60 grams on the tail.