When I put an end cap on a frame member the whole structure becomes longer by the thickness of the cap, obviously. So, if I have a given length for the whole structure I need to shorten the member by the same amount.
I would like to have an option (a checkbox?) where I can automatically trim the frame member. And of course this needs to be associative, i.e. when I change the thickness of the plate the beam needs to change as well.