What methods have you guys used when you've had to lube your speedo cable? Typically I've used a mix of lithium grease and graphite powder (worked great in my old Plymouth), but given that Toyota cables come pre-lubed from the factory, I'm not sure if that'll be the best way to go for my 62. The current cable was installed new in 2011, so I find it odd that my speedo is bouncing like crazy now (has been since last fall), but I'm hoping that if I can lube it I can save myself the hassle of changing it out again.