How do I get the top off a Hotpoint WD860?

The machine is making a clunking noise on tumble drying but I can't get the top off to see what is happening. In the past on different models all I had to do was remove the two screws at the back and slide the cover off. On this model there are additional lugs in the middle (which I can ease out of their holes) but it is still attached at the front. Have I missed some screws somehere or do I just need to apply brute force and hopefully not damage the front display panel that it appears to be stuck to?

Ian.
March 2007