[NTG-context] dx=1cm with imposition: how to disable "right" most dx?

Hi, I have this code: \definepapersize[carnet][width=8.50cm,height=5.40cm] \setuppapersize [carnet][A4] \setuppaper [] \setuplayout [page] [topspace=0.02cm, backspace=0.02cm, header=0.02cm,margin=0.02cm,width=middle,footer=0.02cm,height=fit] \setuplayout [page] \setuplayout [location=middle,marking=on,nx=2,ny=4,dy=1cm,dx=1cm] When I run context, the "dx" distance is added to the right of the "rightest" page of type "carnet". So I have an extra right dx distance that it annyoes me becase in double printing pages, the side above and the side below don't match. How can I prevent that? Thanks in advance, Xan. PS: Please CCme.