This is kind of weird. I got this drawing and the pipe label in both plan and profile appears to be wrong. When I measure between the center of two manholes I get a different distance than the pipe label displays. I check all the normal stuff, pipes are connected to structure, I try swap part.
same thing, bad distance.
Long story short, one of the manholes, when you select a pipe & connect to part and pick that manhole, it's not going to the exact center, which is accounting for the slight difference in length. so the label is correct, it's just that the pipe is not attaching to the center. I can delete the structure, add in a new one & it works but swapping parts to something else and then back to same part doesn't resolve it.
Anyone have an idea how it got this way? i.e. How does a user inadvertantly change the point of pipe attachent on a structure?