NYC 4-6-4 Steam Engine

[EnigmaMachine]

Wanted to share my latest work with yall'. Not done yet but coming along nicely. One problem I'm having is making long lengths of bent pipe (very common on steam engines) with multiple bends. Anybody had to do that kind of thing in your work, I could use some help with that. Using an autocad drawing for reference.

Here's the train so far.... Some bent pipe under the cab.
Chuck