My Lionel heavyweight cars all have metal steps I wonder if the metal steps that were used several years ago are available they were held on with a screw. Many different glues will hold that plastic step on to the bottom of the car end. However something to consider is if you break the new step you don't want it glued on so well that you cannot get the remaining part off. Plastic model cement and CA, (superglue ) will work fine however they may make it difficult to get the remaining part off the plastic end of the car should you break the step again. Perhaps the tiniest spot of either one will hold the step securly. Urethane glue (Gorilla Glue) is not a solvent and will not actually fuse with the plastic like CA and plastic cement will. The problem is it foams up as it cures and will push the parts apart if you do not clamp them together during the curing process. Contact cement like Weldwood makes will not foam up and yet if you break your step it is easy enough to get a sharp blade under the edge and pry the remaining part off. You paint both the part and the place you wish to attach it with a thin coat of the contact cement let it air dry for a couple minutes then press the parts together. While not tenacious like the the CA and plastic cement it will hold this tiny part securly but allow the prospect of removal if need be. I don't use much contact cement less than half of what I use CA for but in this application its merits are worth considering. j
