If you have a “shorter” table, as described in the Field Setup section of the Challenge, you lengthen the plane’s departure tower as described, but you also need to lengthen theupdate7 pull-rod that links the red lever to the plane’s release claw.  Easy:  To do this, take that rod apart at its middle joint, and put it back together two holes longer.  The new connection will only require one black pin (at the far end of each segment).  Don’t reinstall the other pin.  The new pivot in the rod is okay, since its job is to pull, like a rope.  The picture to the right shows the lengthened rod. Click photo to enlarge.