Originally Posted by ARON
I don't think the glidebars need to be replaced, it's just that one of the clamps does not ride the glidebar smoothly. I'll try cleaning both the clamp bottom and glidebar.
There's your problem. There is a little flat point on the inside of the clamp where it glides on the glide bar and it is worn out or pitted.
I have the ability to drive people crazy, not sure if I was born with it or I learned it but I'm damn good at it.