thats one of those built i needles isnt it? you could got ot numark site and look it up there, i dont fuc's with those so i couldnt help you out on this one sorry,
replace that. there's also a small felt piece inside the black "cartridge". you cannot remove the cartridge, so ur justgonna have to do you ur best cleaning it with a really soft toothbrush.
you can change it the model number is GTR01 its like 12 bucks but if you need a replacement right a way go to your nearest dj shop you wont pay more than 20 bucks for I KNOW I JUST DID THIS LAST MONTH i aint at home but ill up the model number of my replacement stylus...TO BE HONEST IAM GETTING BETTER SOUND KNOW THAN AT FIRST....
most stores gotta "ORDER THE NUMARK, SO GO WITH A OFF-BRAND"