assuming its a rack & pinion and not a steering box, get the rack rebuilt
also, the knuckle that connects the column to the pinion shaft just after the rack gets flogged out and gets a bit of slop. Nothing you can do about that unless you find a new one ($$$/hard) or somehow get it rebuilt.
as for quicker steering, spend $400-500 and get a quaife rack, best money you'll spend and the only real way to do it