I'm not going to rip on AE too hard on the AE thread, but realistically.....
As far as perfection out of the box, I remember a few running changes on the TC3. Things like droop screw chassis and arms added in later after the initial run. Also a couple other minor updates. Even the off road stuff has updated parts, so no perfection, but a definate desire to make it perfect or as close as possible as issues or desired improvements arise. Things like taller inner ballstud mounts on the B/T4, steering spindles on the T4 truck, ballstuds with bad threads, gas truck hinge pin retaining screws, etc. This kind of thing is normal, but AE is smart enough to quietly make the change without renaming the car and having a new box, LOL.
That way you don't develop a rep for making mistakes or always selling new kits.
I run all their cars though, so with experience in all the popular brands, I am happy with my current equipment and what AE offers, just not into the walking on water level though.
...Jim