Hi Jeremy,
I found my problem but no solution. The creation of the pipes works well. The tee is also inserted correctly., but at the end of my command I apply a rotation on the tee along the axis of the pipe. I don't know exactly what is happening but the pipe seems to turn also on himself (or itself???). So when I drag it, it move with this angle. I try it manually and I have the same problem even if I disconnect the pipes before rotating the tee, when I reconnect the pipes the problem come back.
Maybe what I am trying to do is not possible. I did a similar function to rotate takeoff on duct and I didn't encountered this problem. But takeoff works differently because I don't need to split the duct to insert the takeoff.
If you have a solution let me know?
Regards,
André