The distance between the truck mounting points on the tender has no effect on stalling on a crossing because both Base Post rail pickup wheels are in one truck and both 7V-15V rail pickup wheels are in the other truck. It is only the length of the truck that matters. That is why the longer trucks made in 1952 solved the problem and why the 322's and 332's with long die cast rucks never had an issue.
This can be fixed but it takes some work. First make sure all the crossing rails are tight against the plastic diamond by tapping all eight rail ends lightly with a hammer. The rails can loosen and move. Then on each engine make sure the 4 pickup wheels and the axles are clean along with the bronze wipers. The spring tension must be about equal in both axles in the truck otherwise the pickup wheel with less pressure may not make good contact with the rail. While the wheels are out of the truck make sure the truck sideframes are straight and even. Sometimes these sheet metal truck sideframes are "torqued", or twisted, so that all 4 wheels cannot make good rail contact.
I find that any of the pre 1952 engines with the short sheet metal trucks can stall on a crossing. At least in my experience the 342 stalls more frequently because I tend to run them slower than other engines like a 302.
