If it's not a Schwintek (sp?), then it's a Lippert. No, that's not "normal", no it will not "settle in during travel" (LOL!), yes, it probably just needs to be adjusted. I would not take delivery of the unit until it is fixed.
If you have already taken delivery, get it back to them ASAP and demand that it be fixed. If you can't get satisfaction from your dealer, then a call to Jayco is most certainly warranted. A slide that far out of adjustment can be a serious problem, and it will definitely not get better on its own.
That's my opinion on what I would do if I were you...
2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)
Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!