mejo naguluhan lang ako kung ano ba talagang model sya. i did shim the neck pocket to adjust the action a bit to my taste. on the neck stamp it says rg3120-04 while on the neck pocket it says rg3120-tw but has been overlapped by a stamp again saying rg3120-bk. weird. might be a frankenbuild by ibby or a proto or just a japan exclusive. i checked the serial it says its a rg3120-bk. hmmm... nonetheless it plays like butter now.