I bought two 'oil' kits (Walthers distributor and refinery) to bash into a recovery/by-products plant (where they take the gases from the coking process and refine them to get various chemicals that can be sold).
Stage one of the refinery is fitting 15 small, mostly curved platforms with etched brass handrails. Aarrggh! The picture shows this stage completed. Fitting the little support brackets (seen still on the sprue at the back of the picture) on the undersides was much less challenging.