I'm in the process of improving and aligning track (and its subroadbed) on my PRR Panhandle Division. I've noticed that in serveral spots my GarGraves track is slightly flattened or lower at the joints. These low spots are troublesome because locomotive pilots (cow-catchers) can contact the center rail and short out. I have attempted to counter the problem by inserting 2" long plastic shims under the joints (extending about 2-3 ties back from the joint on either side of it). This raises the entire joint by a small fraction.
Have any of you encountered this? If so, how did you solve it?
Thanks,
George