To find out (as the place it's attached to is really hard to see) just tap the ends of the horizontal bars inwards towards the engine and listen to the noise.
They should be replaced under warrenty.
Also pull out the spark plug coils and examine them...if the seams are swelling or starting to corrode, the bike's been in some wet stuff and they're expensive to replace (80 quid each).
Good luck with your search. If your original buy falls through, please check out my 2002 GSA for sale in the For Sale forum. It's a great bike. I'm Platinum Pig, AKA Frank. Cheers!