race IAT

Hi,
I wonder if anyone can offer me some advice.
I've set up from scratch an IAT in direct rt 2010.
The experiment runs well, but having compared it to the Harvard version I have noticed that on the Harvard version the scales at the top (e.g. African American - White American) remain at the top of the screen as a constant during that particular phase of the experiment. I would like to achieve this, but as it stands in my version, when the participant responds the screen completely clears (both the scale at the top and the images/words below) then the scale reappears alongside a different image/word. What i want is for the image to change upon response but the scale to present throughout (until the next phase of the experiment).
I've completed the online tutorial, read this forum, and read the manual - but i just can't figure what I'm doing wrong. If anyone could offer some words of wisdom I'd be really grateful.
Many thanks
Dan.