Ray,

We have Centramatics all the way around. Started with the Drivers. Since they helped, we added the balancers to the steer and tag.
Now, on some of the smoothest roads, I actually have to look at the speedo, since I can't "feel" how fast we are going by way the coach is responding.
We will never leave home again without them.

If you can find a local retailer, it seems to be cheaper to buy there than to buy directly from Centramatic. We even have them on our Aristreams.