I've recently discovered I need a new needle as it's worn. When I went into the local Yamaha dealer to ask about replacement costs (i've since decided to go with the JD kit after reading posts here) the mech also informed me I would probably need to get a new emulsifier tube. Is this just a grab for more money or should both the needle and emulsifier tube be replaced at the same time? Does the emulsifier tube (which I must admit to having no idea about) wear as well? Bike's an 02 WR 426.