Doosterhouse--sorry to hear about your situation. I feel your pain. There has to be other issues with all these cracks. Some are at the back, some toward the front. I've heard it was because of axle placement, now bad welds and stabilizer jacks. Like you, I'm just glad Forest River is stepping up to the plate and working with their customers.
Good luck and keep us posted.
Randy and Patty
2015 Sabre 33 CKTS-6 Platinum Edition
Reese 16K Slider hitch
2014 Ram 2500HD Crew Cab 6.7 Cummins Diesel