Steering problem...looking for ideas/causes

Update: I went out to the RV to help them out. Sent them home via airline. The were no longer interested in finishing their RV vacation. It was the first time they had driven/used an RV before and they had a couple of user error problems that caused them much stress, so they were done. One mobile mechanic (in a video they shared with me) showed that one of the tie rods could move just a little (when he tugged on it). There was another mechanic in town who test drove it and looked at it and said the steering was fine/normal and that there is usually a little play in the steering. I think what probably happened was they were driving along the long desert highway and the side winds were pushing them hard (30' RV) so it felt like they were constantly steering (turning the wheel a bit) to adjust for the side wind. I drove it home 650 miles without incident and the steering didn't feel abnormal to me during the drive. I will have my local mechanic take a look and confirm all is good. Thanks all for your suggestions and feedback!

Safe travels!
Chris