The tracks are really well designed on this kit, it even includes a "sag" template - you'd have no worries with this!That looks really good Bob.
Not seen the tamiya kit in detail so very interested in seeing the parts pictures you added.
That sprue with what looks like all the track link connectors looks involved. A lot of care i guess to stop those parts flying off when you start removing them.
Like the etch parts for the ammo racks and think they are almost a must in a vehicle like this as the thinner brass will give a much more realistic look to these parts.
Hope it all continues well.
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