i have a bosch plunge router and if i haven't used it for a while the first few times i plunge the router it takes quite a bit of pressure to get it to drop and when it does it goes flying all the way down, so i plunge it a few times to loosen it up before i ever start, but i was wondering what would i use to "grease" the springs, slides, or whatever it is? i've seen some plunge bases that slide like butter... what should i do to remedy this? thanks