[superbirds]

Not sure this will help, on my coach the steering gearbox had been replaced recently before I bought it. Also a number of front end items had been replaced like the tie rod ends. It turned out the slack adjustment on the side of the gearbox needed to be tightened a little. It caused my coach to drive worse then my old International tow truck. Be careful you don't want to go too tight - the power steering pressure will also affect it. I found it by moving the steering wheel back and and forth and checking to see if the front wheels were affected. In my wheel alignment days we did the same thing to look for looseness in any of the tie rods - king pins etc. If the gearbox is loose as mine, try tightening the adjustment slightly then re-test. On mine this made a huge difference in the driving experience. I went from two hands on the wheel struggling to stay in my lane to be able to drive on a one lane road with one hand.
Having someone topside to work with is a big help, I wouldn't crawl under it without a safety block and wouldn't do it if it was running. Good luck
FYI - to check the toe in for the tie rod adjust use a measuring tape from a consistent tread grove on the front side and back side of the tire grooves. I'd think normally on this size of vehicle toe should be are 1/8-3/16th of an inch. Just a guess. Someone will know I'm sure. The toe does cause slightly more wear, but does tend to tighten the steering. If it's way off I'd probably have someone fix it. You could do it yourself but it's hard without the right tools and experience.
Happy New Year - a Florida trip sounds lovely.