it is worth it, my steering has no play in it now, it feels really direct and connected to the wheels can feel everything through the steering wheel
although it was a bitch to install the spacer as i couldnt fit the ring end of the spanner over the nuts so i had to use the open end which took forever, once all the nuts where undone i disconnected the lower half link of the steering shaft from the rack, bolted the spacer to that then put it back in and tightened it all up, make sure u scratch a mark across where the lower steering shaft meets at the rack so when u can slide it back in into the same position