Someone recently mentioned using Norhwest Short Line replacement wheelsets on their ARNOLD S-2 switcher but I cant find the thread. NWSL website has two options, both with 40" wheels, a /64 and a /72 which I believe refers to thread width. Which ones should I order and how do they compare to sayFVM narrow and the new slightly wider wheel? I have no trouble with the original narrow FVM's on my layout and would prefer to use the narrower replacements, if they work. Appreciate any feedback. Regards, Otto
