Welcome to the forum its a great place to get your questions answered. With these new rigs that are being made lighter to be pulled by lighter TVs the floors materials have changed. feeling a little give is not unusual unless it is really soft. If you have doubts have the under side inspected.
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho