Look into buying or borrowing a rack guide tool to adjust the free play in the rack. This should be done regularly.

Lift your suspension up and check for any free play in the rack ends or tie rods, hold the tyre at the 9 and 3 o'clock position and move it left to right. You will be able to feel any free play and investigate further.

And no it will be easier to change the tie rods and rack ends as opposed to changing the whole rack....