Originally Posted by Wayne Collins
You can make them easier to open and close with a drop or two of lubricant/
A dry silicone or graphite lube is best, as oil will attract dust.
Yes, dont use anything that dirt will stick to... its better to leave them unlubed than to use something like grease. Also dont use the little bar like Scamp
tells you to.. lower tongue to release them, raise tongue 2-3 turns of the jack to snug them up.
Using the bar leads to deforming the soft metal as shown in this photo, and that causes the slider to stop sliding.
PS, this is for general info as the OP just wants to get rid of them.