Reply to cdj help

i decided to buy a cdj as i wanted to start djing with them. i bought one on ebay but the magnet which sits on the platter to rotate it is broken. im desperately trying to find a replacement part but have only found one place.
i have a denon dns 3500 cdj.

hopefully ive explained that enough for someone to help. obviously im new to cdjs so not sure what the part is called but looked in the manual and says taperboss but believe thats pointing to the motor itself.

id rather try and find the part so i dont have to get a refund and bother trying to find another cdj for the same price. im based in the uk so am looking for a uk parts company but cant find any for denon at all that have that part i need
http://www.instrumentalparts.com/dpm505.html