Sorry, I'm such a gear slut, so I have to ask.. What wah do you use?
do not use contact cleaner or wd40 as those actually washes away the lubricant.
You can prob get lithium grease from those better bicycle shops or RC <remote control> shops
but not all are white, some are red, blue color ....
http://shop.sgtooling.com/index.php?act=viewProd&productId=49
here's a nice grease sold locally, but its teflon based.