The Jaycos use a magnum truss system that's supposedly rated to hold 4500 plus pounds of weight. You may feel a difference between standing on a rafter directly and standing in between two of them, but there should not be excessive flex.
I would not want a 2 yr old trailer with a roof that's already compromised if it was me.
This post is yet another example of why i hate rubber/tpo roofs. The dealer cut it while washing it? ????? Good grief.
2017 Dodge Ram 2500 HD, 4x4, CCSB, 6.4L HEMI, Snow Chief, tow package.,1989 Skyline Layton model 75-2251.