Separating bucket seat runners/tracks

there are tabs that need to be bent out in order to separate.

Separating them is NOT ideal, there are tiny ball bearings in there and once they come apart, plan on spending quite awhile trying to get them all back in.

I took one apart and fiddled with it for a whole day and it never seemed right after all that, so I think you are better off painting what you can, re-grease and use.

doesn't look like you have a rust problem in the actual slider.