We had a similar problem with our Rockwood 8285 ikws. I had added the squeaky bathroom floor to our list of items that need addressed under warranty. It was quite noticeable and we were concerned. However, Next campsite we attended was on a solid dead flat concrete pad and guess what -no squeak at all. Perhaps we had the frame slightly twisted?
Try levelling your rig better side to side and end to end and see if that helps.
Sent from my iPad using Forest River Forums
Dave and Joanne
2013 Silverado 5.3 Tow package 3.73 super springs Reese 16k
2015 Rockwood 8285IKWS Diamond
Jokes about German sausage are the wurst