I am not sure where to post this question, but if I am wrong - Oh Well. I want to cut off the non operating couplers on the front of my steam engines and replace them with opperating knuckle couplers. Can you direct me to a "how to? There may be a thread already on this but I don't know what to search for. Any and all help would be appreciated. I am working with HO scale engines on the IHC price level. Thanks Frank