[Mike484]

I have the cam style and it makes a lot of noise. I now dab on a little vasoline to the cams, the ball, and a couple drops of oil in the hitch where the WD connects too, now it is very quiet.

I use vasoline because when I used grease, I had a big mess, vasoline does not make near the mess and is much easier to clean up, but doesn't last as long as grease. It's a trade off, but I prefer the less mess over the better lubrication.