I know it's me just being picky, but the cast pipework provided in the kit for the LHS of the firebox just was not good enough for me. So I took a mold off the Comet Exhaust Ejector valve from my 2-8-0 build and cast one in resin. Pipework completed from a good photo of a late fifties DoG with remnants of an old Comet detailing pack and some stripped bell wire gave this:

The RHS is not so troublesome, although I'll end up enhancing that too with more bits of wire no doubt