I thought I was doing well. I have created a cold form purlin. To insert it ot to my truss, I created a work plane at the slope of the 4d truss. used 3d snap. Bang, purlin in place at the correct 4d angle, but the top of purlin snapped to where i wanted it to go. If I adjust the start end level ofset, so the pulin in in the correct place, it rotates itself bacl to 0degree. Why would this be, an hour later and no better off.

It will not allow me to move it up vertically, only along the truss plane.

What am I doing wrong, hopefully something simple.


Help needed please.