Starting on that suspension:
The instructions have you start on the rear two axles first and so far that is all I have completed. Trumpeter would have you build four A-arm assemblies as seen in my first photo below.
I HIGHLY SUGGEST that you break this step into two assemblies as seen in my second photo AND that you shave about 1/32nd inch off the end of that half shaft. (Red Arrow)
The A-arms have functional hinges here and are a real bear (insert stronger language) to snap together. It is much easier (that’s a relative term) to snap them into the chassis mountings if the brake discs and the half shafts ARE NOT yet attached.
NOTE: Both the brake discs AND the half shafts are keyed to go in ONLY ONE WAY - so please be aware when installing!
Springs! How do I get to install the springs? - NO ???
ASSEMBLY NOTE: You are going to want to round off the ends of those axle shafts just a bit. This to make it easier to insert them into the poly-caps contained in the wheel hubs. If left as-is they will require so much force as to almost break the suspension while trying to get the wheels on.
(I even dusted them with a little pastel dust to act as a lubricant!)