I've heard that CBR6s have a problem with cam chain tensioners? My bike sounds like something along those lines is wrong with it, it sounds sorta like a bag of nails on and off.
Am I imagining things or is their a serious chance of their being problems with it? The previous owner was definately not a big fan of maintenance or servicing.
Finally, how much am I looking at paying to get it fixed, and suggestions on where to get it done?