A3 GPS lighter problem
 

Hi guys, bought a 2000 A3 a couple of months ago but have noticed when I put my Sat Nav/GPS charger into the cigarette lighter, it won't stay in. It will work and charge IF I hold it in or wedge it in but because it's downward facing, it falls right out as soon as I let go. Has anybody else encountered this problem? If so, is it a problem with the cigarette lighter socket or is it the charger (perhaps too big for the socket so won't stay in) ??

Thanks