(First off, I don't own the piping and cabling extension. This is pretty rare work for us, so it's isn't worth it to buy.)
One model, two questions:
1. Why are there circular references in this model? Initially, I created STRAIGHT_LTI_1, repeated it as needed, and replaced each "STRAIGHT" by copy. This created a circular reference for every STRAIGHT. I eventually built them each from scratch just to relieve the loops (I can't stand unintended loops in my models, even if they aren't causing any issues). I had to add a couple different STRAIGHT pipes in the run (5 and 6, currently) and I got the same problem using the repeat and replace method. I've tried checking everywhere I know to, can't figure out why there's still circular references with those 2 pipes.
2. This assembly is a good example of an issue I'm having. In a family table, is there a way to incorporate an "Extrude to selected" type extrude? I'd love to just have several instances of STRAIGHT that reference a different face of an elbow to extrude the pipe to. From what I've found online, this either isn't an option, or is included in the Advanced Assembly Extension, something else I don't own. Any help with this?
Thanks