In regards to your concern about springy floor in your Warrior, I don't think you have any major issues, as my 93 Warrior is the same, springy in places. As stated in a reply to your concern, I agree with the above that the floor concept is not the same as the structure of a home, weight is of concern in the RV. Concentrate on your ongoing project, take care of that water damage an enjoy what is in front of you. Aging of all Toyotas make it paramount , to keep an eye out for water damage, leaks an the like as the sealants, waterproofing begin to break down in due time. Lots of TLC will make it all worthwhile.