The ngs Seacow kit is certainly one of the more challenging wagon kits i've come across. The first steps of assembling the plastic superstructure and the etched brass chutes are simple enough, but from there it seems to get exponentially harder as the etches get thinner and more delicate. The end product does resemble Seacow although by the time i got to the fully assembled stage my mind was far from taking photographs and nearer thoughts of a bottle or two of ale, so here's a work in progress. Future interations will avoid some of the mistakes made on the stanchion etches although they aren't howlingly obvious i so i'll let myself off the hook.
It's an ingenious kit and much recommended, especially to go with the ngs or revolutioN's shark. The only downside is that the society is currently out of stock of this kit so my Seacow is very lonely.