Hi all, A friend gave me some HO trains some months back and most of them need something. I have the above mentioned item but, needs the screw that goes into one of the drive wheels to hold on the drive rail. My question is, are all the IHC drive wheel screws the same size for the steam locos? Does anyone have an extra screw I could purchase? It's for the IHC 4-6-2 #M9930 CNJ Blue Comet. Regards, Growler