I have a 2000 Executive with tag axle. I had always thought the tag axle was supposed to help driving stability but I was never really happy with mine. I was constantly having to adjust steering to keep it pointed straight. Wore me out. I decided to install a Watts link. I had a local truck shop install it for me because the front hydraulic jack mount had to be welded. Most don't require welding but mine did. I noticed significant improvement but it still wandered too much. Then, a couple of years ago at the Monacoers Gathering, Scotty inspected my TRW and found it needed significant adjustment. He adjusted it and the drive home home was the best it has ever been. So, in my opinion, the combination of the watts link and proper steering gear adjustment is essential, at least on my coach. Now a happy camper. Or will be when we get to camp again.
Rick Melling