I certainly would just like to go down the road to "Parts Unlimited" However dreams are easily woken from.
Recently I built up some more WSLCo replica Groundthrows, since one is never enough, and these are the easiest to make, and use. Just step smartly on the (well oiled) lever to spring it up 'n over. The Rectangular versions are in keeping with those used on the Diamond&Caldor but echo the WSL crankarm since I'd already made those anyway....and that lot is 5 weeks effort there(for me) to boot.
There's more to building Narrow Gauge than just Locomotives.