I have encountered a problem with my Lionel 6-11734 Erie Alco FA ABA set.
On O-27 curves, especially switches, the A units started to "throw" the next car off the track. Especially when reversing into a siding.
This turns out to be a lack of truck articulation, caused by the trucks hitting the screw heads on the pilots!
For now, I have removed the pilots. As a permanent fix, I plan on countersinking the holes in the pilots and using flat head screws in place of the original pan heads.
However, I have heard mention of a replacement pilot that looks better than the stock ones. Does anybody have a part number?