My 512 was actually better than my Lola from the box.
My Lola had overspray and noticeable paint chips where body sections met, a bent rear wheel and some gear noise. (Not to mention not a drop of oil or grease) I got it running well and like the way it drives now that its been tweaked some.
Only issue I have with the 512 is the squashed look and the amount of tire truing needed to get rid of the molding "stubs"!