Dennis,
If you have already scanned through some of the other threads regarding this problem, you've probably noticed a common theme of things to assist with the problems that you are experiencing. Weighing your coach and adjusting tire pressures accordingly, having the alignment checked by a competent shop, adding front and rear track bars, and addition of a good steering stabilizer are all common components that gasser owners add to help cure the issues that you are experiencing. It's certainly a shame that you would have to put additional components on a brand new coach. As these handling issues are not new to gas coaches, just as the above mentioned fixes are not new, you would think that by now manufacturers would include the necessary items. Or, at the very least, offer them as an option.