Removing the stock cooler from Gigabyte HD4850 ZL

Hi guys.

This might be a dumb question but I'm really having difficulties removing the stock cooler from my graphics card. I just unscrewed 4 screws on the backside of the card but I just cant get the Zalman stock cooler off. It seems I need to put quite much strength in to it to get anything loose. I can't think of any other screws I could remove...

Is there a certain technique to it or should I just jerk it off and wish that nothing breaks ? Im trying to replace it with Accelero Twin turbo.

I've found lotsa Youtube videos of installing TT, but none of them show how to remove that damn stock cooler , which seems to be the hard part.

Any help would be greatly appreciated.

Thanks.

was just thinking - is it possible to post a good picture of the back and front of the card?

Thanks for the help , that rotating motion did the trick! It went kinda smooth although the cooler was in there pretty tight.

I don't have a camera so I can't take any pictures, but that's the exact model I have:

http://www.lapstore.net/store/images/17200279.jpg

The cooler is being held in place with only 4 screws like I thought it would. The Zalman isn't as quiet as I expected, it clearly was the most loud component inside my case. The real reason for switching to Accelero TT was that I snapped one of the rotors off the Zalman by accident this morning

It's noticeable quieter now with the TT.

Thanks for your time Montyuk!

heh just looked at the tt myself, whats the cooling like on it? i note the blerb says it comes with a 2pin - does it come with a 3pin aswell (or an adapter) ?