As others have said, building to instructions traps the wheels. I have one part built where I've fitted axle boxes. If you decide to go ahead PM me with an address and I'll send you some works drawings, too big to e-mail.. You are right about generic, as far as I remember the tank is riveted but the profile matches the later series with welded tanks. The front and rear trucks have something like 7 or 8 parts, mine have 40+ to get it right. I tried memory wire reversing, John Clutterbuck did it with his K1 about the same time. It works, but only just and now I'm back on 16.5 , back on DC. Photos in SAR use aren't common, but by the time they were withdrawn I doubt any two had identical pipework. Some rivet tanks presumably corroded at the bottom so watch for tanks with riveted tops and welded bottoms.
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A friend has one in 16.5 ready built from Backwoods. and to be fair it runs like dream. It is on the original Faulhaber motors.
