Always something!
Once in awhile a car or two would derail coming from the 3 track return loop onto the mainline. There's two turnouts and a curved crossing and I thought that was the problem but two rail ends were miss aligned and causing it.
I needed the above creeper and had to move a large building to get to it, just barely!
Lucked out on the creeper as it is at its max height and just cleared the upper yard lead tracks.
