I Just got an Used Yamaha BB2000 serial# KPI10151 and am wondering when it was made. Can anyone help me with this? So far I love this bass! It sounds Awsome and is pretty versital. It is all original except for an active 2 band eq replacing the tone knob. It has an eq by pass switch to. The passive mode sounds so good I haven't used the eq that much. It's neck thru which I like. It's sunburst which is O.K. but I'd prefer a lighter color. Getting it refinished transparent white would be really cool so you could still see the walnut strips in the neck and body. I'm dreaming now! Seriously though the bridge and tuners are really solid but tarnished and I'll probably replace them with Hipshot tuners and a Badass2 bridge. The body is maple and vrey heavy but acousticly(sp?) it sounds sweet and the whole thing vibrates for days. Any info or stories anyone has about these or similar BBs would be much appriciated. The truss rod has nut on it. Is this normal? I haven't seen one like it before. The neck is straight and action is perfect so i'm not worried but maybe in the future. Thanks again.