I have a 2019 Heartland North Trail. This week while camping I noticed the back end of the RV was sagging. After inspecting under the trailer I found the main I-Beam on the passenger side by the back leaf spring shackle was cracked. The back shackle on the driver side, was broken off the main I-Beam and the beam was cracked. Is the manufacture required to fix this? Do I need to take this to a Heartland Authorized Dealer to get it repaired?