tom and betty,
Don't be in despair over this issue. Many motor home owners have been in your shoes including us with our rig when it was new. As stated by others, there are numerous things that can be done or added to make it right. I didn't want to mess around so I went all-out with the following and our rig went from a drunken sailor to excellent.
1) replaced the front stabilizer bar with a heavy duty one
2) added a rear heavy duty stabilizer bar (we had none to begin with)
The two heavy duty stabilizer bars reduce side-to-side rocking motion
3) added rear trac bar (eliminates horizontal tail wagging)
4) replaced stock shocks with heavy duty Koni-RV shocks
5) replaced the stock steering stabilizer with a heavy duty one
6) got a front wheel alignment with the rig loaded as if on a trip
7) appropriate tire pressure