Sorry for the long wait for a reply... the thread got marked as read before we saw yours...
To answer your question, the StyleVar:
dbtech_draftposts_reply_spacer is what you will need to adjust. Adjusting that value will bring the draft post higher up both the showthread and forumdisplay page (by the looks of the screenshot, the showthread is lower than it should be).
Let me know if that helps. Try a few different values to adjust it and see what looks best.
Matt