you mean to lift the opponent back up? Maybe it's just timing with the 2H.
...SW>K>2H>j.S>SW... is a bit easier, or just catch them in the air after SW. ie; ...SW>land>j.S>SW>land...
Of course, stage position matters a little when you're setting up SW loops but the general idea is there.
also; http://www.dustloop.com/forums/showthread.php?t=4231