head unit removal

[womble sri]

thought i better get some bangin tunes in my ride blud innit! so i got out the trusty haynes and followed took out the liitle screws remover the 'fascia' and nobs and got to the "depress spring clips" part i gathered what they were i think the 4 little bits that look as though the blots fitted down the side so i 'depressed' them both ways but couldnt get the begger out i know its a stupid question but i dont want tolose my rag and ruin the dash. the light got the better of me this evening not that i was out there for more than 20 mins.
any help would be appreciated
neil

[bump]

Their in damn tight, Took me ages to remove mine and I'm pretty practiced aswell. If you can remove the bottom section of the dash it give you access to the back of the head unit to give it a bit more of a nudge. still took me about 20 mins some scraped knuckles and swearing! Enjoy